Best 1.8T 20V Tuning Mods [Seat, Audi, VW, Skoda Tuning Guide] 1.8T Engine Performance Upgrades

[@seanspringett2914]

Am a old geezer, ended up buying a random ibiza 2006 cupra, 1.8t to do a 2 mile work run, pretty surprised in how good this engine goes, which has led me to this, good listen

[@zeusricochant7357]

Ive got an 03 a4 Avant 1.8t (bex) with under 90,000 miles. Been off the road for a wee while but it's going to be project. Love it so much

[@straightupautomotive]

2003 Audi TT 225 Quattro. Love this thing. Always loved the 1.8T since my 2003 20th anniversary GTi. I have yet to get it tuned but have all the bolt ons including a front mount. Woke it up considerably. One of the best engines ever built imho.

[@torquecars]

Got to agree with you, it was bulletproof. I loved mine and it never missed a beat. I only sold the car because it has some accident damage and was gutted to lose it. It was the last fantastic Audi VW engine IMO before the world went eco friendly and everything is run by computers and gadgets.

[@MarkMyWordsXx]

If you haven't tuned it yet, your just goofing around

[@everythingintheworld1891]

@@torquecars Hi I have one Audi A3 1.8Ts quattro 180 hp. Model 2000. Engine kod AJQ which upgrade turbo can i have. I'm thinking about one K04. which K04 turbo fits my engine. Thanks 🙏

[@t-pitz8866]

@MarkMyWordsXx getting a 03 1.8 ,awd. How do I go about tuning ?

[@winky_ice]

Still have my 02 1.8t GTI with over 253k miles. Bought it with 7200k miles back in 2003. Love this car. I have done everything to it except open the motor. Great car make sure to clean your throttle body plate and do an adjustment after. Car runs great with AWP stage 3 KO4 Turbo.

[@torquecars]

Thanks for sharing, I wish I still had mine to be honest. These were the last of the decent engines before emissions regs and fuel economy concerns became the driving force behind engine design.

[@joaovccm]

what mods should i do to get 220 whp? On an AWP golf gti engine?

[@Ghostixe]

My old 2001 Audi TT Quattro 225 had 267k miles on it when I sold it. The only thing that went wrong for over 40k miles was coilpacks. I was told it's from high rpm shifts with a unitronic tune. The current car I own, another TTQ225 has 103k miles, all stock. I absolutely love these cars. They just work.

[@Kimito-ix6ro]

ive got an audi a3 8l 1.8t thanks for these great video's

[@justincovert6943]

2015 1.8T MK 6.5 Jetta. Loved it so much I bought a second one after I rolled the first.

[@torquecars]

You rolled it. Not a great moment I'm sure, but we've all been there.

[@justincovert6943]

@@torquecarsya at about 70 mph after a dude in a beat civic cut me off. Definitely not what you want.

[@Randy-lg1qo]

I miss my 1.8T, had an S3 for over 15 years. It’s a great engine - never had any issues with it and was running 27PSI the whole time. Have a Skoda with an EA888 gen 3 now

[@emotionalintelligence776]

If you're interested in a K04 and you already have a K03s keep looking. If you somehow feel the desire for more power then go big turbo. The reality is most people and I can't stress it enough don't need anything more than a tuned K03s with full supported boltons. A fwd car like a vdub with a huge low tq curve just waste energy spinning your tires in the first two gears. There's nothing wrong with a working N75 and unless you're a mechanical engineer the so called performance N75 is the same as the one in your dub. It simply has the screw turned full left inviting spikes and other shenanigans that kill your turbo and or motor, just leave certain things alone. The best information is what applies to how you're going to drive your car decide wisely it's your money, your license and always your life that's at stake.

[@chuck0226]

What bolt ons can I put on to make the most hp while staying on stock k03s turbo?

[@lordduke3167]

That's the best advice

[@thepsychobilly88]

I bought a 9n3 Polo GTi on sunday and at some point I'm looking at adding some power. It's already got a "Stage 1 tune" but everything else is stock. Pulls really good already so I'm not looking at adding that much more power, I'd just like it to be perhaps a bit more responsive. This video was one of the reasons I ended up with the car, so thank you! :)

[@torquecars]

That's so good to hear my friend, hope you have many many miles of fun in that. It is pretty much guaranteed that you'll enjoy it.

[@BigSteve_Gaming187]

I love my 2004 VW Passat GL Wagon. It has the not as favorited AWM 1.8T, 5-Speed Manual. USA variant. It has almost 230k on it, but it doesn't burn a lick of oil between changes. Ever since it came into the family we have kept up with oil changes religiously as well as the appropriate belt and water pump replacements as well as kept an eye on the pcv system and common steering issues that accure with the multi-link suspension design. I'm going to be bringing it out again this year to VolksFest in Milwaukee. It is shaping up to be a great year for the ride after putting the work I've done, restoring it, being in my hands after getting it from my X-wife. Such a reliable motor not causing much of a fuss after the 18 years of its life being in and through the brutal Wisconsin winters.

[@mariomartins6960]

I own an AUQ in a 2002 Leon cupra and have done over 40k miles on a ko4 no problems! People go on about the BAM but a stage two AUQ with a KO4 turbo you can reliably push 260BPH, The BAM engine has no secondary air meaning the moment you change anything from the original you’ll have to put a resistor across the plug, as BAM engines do not have that part most people think not having to blank anything off is great, but the reality is that although a hassle having to blank off here and there on the AUQ, it makes it’s 19mm rods at 260BPH almost indestructible while the BAM’s 20mm rods at 260 wouldn’t last due to not having that part, even with the resistor across the plug, hence why the Cupra r’s are not very valuable, while the only reason the AUQ isn’t valuable is due to a name stamped on a bumper. The fact is, the AUQ is the better engine and most don’t know it’s forged malhe, if the VW group intended for its customers to tune their r’s and rs cars they would of used there AUQs on there fancy named cars, BAM is only intended to be stock hence the reason why they decided to go with no secondary air. The AUQ discreetly placed in cupra and not Cupra r for example’, was INTENTIONAL! For those who have expert know how about mechanical engineering to keep tunes on the go and legal, it’s a legal mechanical loophole to keep tunes on the go and away from protesters! Your welcome!

[@evanmcdougal373]

2001 Audi TT Roadster with AWP engine - Desert Green with green leather and green roof. Lot of fun and economical to drive. very informative channel. Considering some tuning without changing the OE looks

[@torquecars]

Thanks for the support my friend. I'll be dropping some TT tuning videos in the near future.

[@UngluckInc]

AWP engine but still running the AMU management?

[@MadAdventure919]

The guys in Canada and Brazil push those 1.8t engines completely stock to somewhere around 550-600whp on Golf Mk4. Big turbo, E85 and tune. There is a live video you guys can check by the name of 1.8 HOOP highest HP

[@jamesmorton-m6tzo396]

Driving MK4 Golf 1.8t AUQ 180hp - love tuning video for this

[@torquecars]

I will add this to the production list for you, they were pretty popular engines, and thanks for supporting my little channel.

[@jamesmorton-m6tzo396]

@@torquecars No problem, i only just found your channel a few days ago, its good stuff mate, very interesting

[@Alskie0903]

I have a 1.8t quatro, which I’m tuning your vid was great advice , great video, keep up great work. Al

[@torquecars]

Glad it helped Thanks for the support and encouragement.

[@sniperviperman6400]

I'm driving a Sharan 1.8T with a build race block, fully forced internals, bored, flowed deck, race valve train good to 7500rpm. fluidamper crank pully and a whole lot more. TTE300 for now but later there will be a G25-550. Block can handle up to 800HP.

[@torquecars]

That sounds like a real beast of an engine. Do you have any traction issues from that setup? Sounds amazing.

[@sniperviperman6400]

@@torquecars I only lose traction in the wet, in the dry wheelspin starting from 6000 rpm in 2'nd gear to 7500. It's quiet a heavy car so the power is good handling. I don't remember they sold the Sharan in the US. Of course I have upgraded brakes, single mass light flywheel with upgraded clutch, replaced the tiny stock intercooler with a much bigger version. Deleted all the EGR, 2'nd airpump and other obsolete engine junk. Peak boost is 1.7bar / 24.6 psi. 560cc injectors, R8 3.0T red top coils. The stock crankcase has been balanced as well, all new race bearings for better oil flow. The car has a much stronger diesel gearbox with upgraded driveshafts to handle more torque. Upgraded duel inlet and outlet springs and race valves. upgraded cam followers ARP heads and bolts, a stronger water and oil pump. Race distribution belt to handle the torque. catch can without venting to air, DW 65V drop in fuel pomp. ST coil overs back and front and probably whole lot more . you can check my channel with the 1'st engine start after new build and a few dyno sessions.

[@UngluckInc]

@@sniperviperman6400 somethings don't add up in you parts description here.

[@OldManShoutsAtClouds]

@UngluckInc I read through his build list, and I see nothing out of the ordinary. Why don't you be more specific with your criticism?

[@RezaVoorneman]

I have had a S3 210bhp std and tuned with revo to 285bhp many years ago. The 210-225 bhp versions were aluminum blocks and lighter. Best engine I have had. Forge Motorsport had some good intake upgrades aswell.

[@jungillestt02]

I have a 02 Audi TT 180 Quattro with the AWP engine. Fun car, haven't done much besides a nuspeed intake and silicone hose pcv kit. Turbo inlet with a turbo silicone breather kit and fmic with forged diverter valve and new n75 along with a down pipe are on my list so I can remap it with some decent results. I plan on a tranny rebuild and clutch way before the map though. One thing I can say is the ko3s feels great comes on fast and hard but definitely feels like it's being choked up a lot by the stock inlet and outlet (down pipe) side of things getting to the upper rpm range. Low end torque is great though for daily driving around the city.

[@torquecars]

Thanks for your support and encouragement my friend.

[@francoazzopardi2295]

Great video. My sleeper 1.8T is flowing 385g/s of air. I’ve worked on reliable power objectives. My remaining concern is the OEM gearbox. Any plans for a video? Keep it going!

[@aj00.01]

tempted to swap m42b18 to a 1.8T 20v to my E36.

[@PatrickAndrewsMacphee]

2002 Audi TT 225 Quattro. Enjoyed this very much. Thx.

[@torquecars]

Thanks for the support and encouragement my friend I'm glad you've found it useful.

[@HDTeamPerformance]

Stage 1+ spec Desert Green Pearl 01 MK1 225 AMU big plans for this car, super fun daily, 3 Angle valve job for better flow and upgraded DV currently mapped at 273whp 275tq hopefully down the road finish all the bolt ons re map to stage 2+ maybe a custom map to level out at 300whp 300tq ✊🏻! Beautiful motors, considering coming from the VR6 world!

[@liamferrari5432]

Wanting a mk1 Skoda Octavia again! I had the SLXi turbo and missing it already! Back hunting for a VRS😢 1.8 turbo is my fav! Mk1tt was awesome aswell loved it!

[@torquecars]

I miss my A3 with the 1.8T so many fond memories I wish I'd never sold it now.

[@efstratios.grammenis]

I have a 4x4 Skoda Octavia 1U5 1.8T 20v ARX engine code. Currently at 190.000 km, still on factory K03s turbo and factory fitted clutch. I am the third owner and the first owner claimed to the second owner that he had the car remapped to 200 BHP.

[@ДмитрийБра-э6з]

У меня 430 000 километров родного пробега . Стоит родная турбина . Я третий владелец . Arx

[@charliewigh5888]

Mine Audi a6 quattro with the 1,8t 20v have 40000km and just change the turbo

[@oldschooljoypad3296]

Mine is 99 octavia with 1.8t agu and goes like a children out of school

[@Mk4heavenHD]

Great video, I have a 300bhp 1.8T mk4 golf all stock internals running k280 hybrid turbo. Great engines

[@gdubstep74]

Great work bruv locked in. Got 2004 Audi TT 8n 225 Bam, stage 1

[@torquecars]

Nice motor, they are great fun to drive, and thanks for supporting my little channel.

[@gdubstep74]

I know and to say my cars 18yrs old,8 owners but been well looked after. Paint work needs help but strong engine and body. Going to get front inter cooler,3”downpipe and alloy manifold. Car holds 16psi all day and pecks at 21-22 psi.

[@cryptostunt8772]

There is also BFB that is mounted on 1.8t a4 b7

[@ByBojanTM]

yes and B6 last two years

[@nickyaxley5588]

2002 A3 1.8t Quattro Sport here! Stage 1 and pulls like a train! The K03s turbo whistle is pure music 😙

[@ericpullen524]

I am currently fitting a 1.8T (AWP Engine code) into a MK1 Golf Cabriolet.

[@olivierstevens4134]

S3 8l driver here. Got airtec intercooler,stonger rods, link ecu management system. Zinram 3" exhaust with valve. Original turbo running 272hp 380nm. Realy like the power but will probaly get a hybrid turbo.

[@uncle_pupi]

I just bought the passat 1998 1.8t 20v yesterday, can't wait to tune it, the first tune is gonna be the exhaust, and this video is perfect for the preparation of the second tune which is the stage 2, ty for the info man, this vid helps a lot❤

[@joshniemi7239]

I have a 2005 MK4 VW GTI with the 1.8T I had an injector tip blow off and washed the rings out. This car dyno'd 351 hp last summer as per the previous owner's dyno sheet and my goal is to build it to make 450 hp reliably and efficiently. Reliably meaning I expect at least 150,000 miles with only routine maintenance.

[@ph2enix]

Wow what’s done to it?

[@L2times]

I just bought a 05 Passat v dub 5 speed rot row waggy, yes it’s a wagon. I love it😎

[@L2times]

Has 1.8t 4 cylinder 5 speed engine

[@MozzarellaBasket]

Just bought a 2001 Seat Ibiza Cupra with this engine. It was already tuned, so I'm looking at just fixing the car up and if I end up keeping it I'll see how far I can push it. These cars are rockets just from the tune alone.

[@sandyshine6690]

Mk1 99 tt Apx 225 150k lovely power for the money enjoy every minute driving her ❤

[@torquecars]

Thanks for the support and encouragement my friend they are indeed great cars, a certain future classic.

[@beastman.330]

How much power can a DSG gearbox handle . Your video is one of the best .

[@VeryMetal01]

2003 tt coupe 225 bam , just changed the cambelt , tension , hydraulic tensioner fitted the catch can from cloud 9 to delete the pcv system , and tomorrow i will be installing a new front mount intercooler , new injectors then its a full service with new iridium olugs then onto the rolling road , im hoping for at least 260 bhp 🤞

[@jimlee7317]

2001 wolfsburg jetta 1.8t with frankenturbo f21 and 550cc injectors, eurodyne maestro 7. Still hunting for shorting injectors which is making me crazy but we'll figure it out!!

[@luisbaldera3447]

Also have a VW golf Gti mk4 Oettinger 2000 cable throttle with some mods very fast Wich a love

[@tgamet796]

Hey loved the video, Please do more videos on 1.8t 🤗

[@torquecars]

There will be more coming up for this awesome engine, stay tuned. Thanks for your support and encouragement.

[@Ridder-In-Harnas]

Polo 1.8t 9n3 ! LOVE IT

[@IkenOuse]

Just got a Skoda 1.8t 4x4 combi. ARX with K03s. Looking forward to turning the wick up. Great video.

[@torquecars]

Thanks for the support my friend, good to have you aboard. Have fun!

[@IkenOuse]

@@torquecars do you know of or have details on which suspension parts are inter changeable with the VAG products?

[@Neil.c04]

im on the same boat my friend got a silver octavia 4x4 5 speed ARX engine, Looking here to see what potential i can get this thing and make it into a sleeper car haha

[@UngluckInc]

14+ years, 260k+ miles at 450-600whp fuel/boost depending in a MK1 GLi

[@brandymaboy1979]

My second mk1 golf was a GLi lol. Was 1977 with small tail lights and chrome around the windows. First it was painted the wrong colour then a dude welded the engine mounts in too low meaning first start shook it to pieces. Good times. Still miss that car. Second paint job was Porsche polar silver. Sky blue in sunlight. Loved it loads.

[@jimmyjohnson2480]

2004 VW Jetta GLI 1.8t. Converted clutch to single mass, 2.5in exhaust from the converter back, ECS coils and Cold air induction. Rest of vehicle is stock. I live in the US and wish to know where would be a recommended location to get remap of the ECU.

[@daviscrawford8452]

Right now I have a 2004 b6 a4 that’s got a ko4 turbo with apr stage 2 tune and other supporting mods. I just fixed a boost leak so I’m enjoying the car making full boost but I do think the car has more potential.

[@kimboDragon]

I have a unmodified 2004 Avant A4 B6 1.8T BEX 6 Speed manual Quattro S-line My question is what mods to I need to have it ready fort a re-Tune for a bit more power ? Also what was done to yours, the supporting mods?

[@SuperCarJohnny10f1]

What did you replace to fix the Boost leak ?

[@jaymelomento4138]

@@kimboDragon FMIC INJECTORS INTAKE BOOT UPGRADE DOWNPIPE K04s

[@shanelapointe724]

@@SuperCarJohnny10f1 change your vacume lines or do pcv system delete

[@elijahrios8740]

I got some questions message me

[@TheBullMastiff17]

Have a unmolested 2001 1.8 20vt seat leon mk1 can't wait to get started on some mods

[@torquecars]

I think you'll have lots of fun, but do research your mods and have a plan, it makes a lot of difference and saves a lot of wasted time and money.

[@xpixelz5690]

1997 Audi A6 C5 AWD Quattro with the 1.8t 20v engine(code AEB) with 150hp and 485.000km. Still on stock by the factory with the ko3s turbo and I want to put it like 250 because i don't think the engine will go further with my following predictions.

[@drivemaui7548]

Thanks for all the great info! Very useful when I am about to order parts for my 05 mk4... going K04 and shooting for 300hp goal. It has been so much fun removing the motor and breaking everything down. Doing some wire tucking and about to replace the main and rod bearings as well as piston rings. Looking to make it a great crater road weekend car. Do you think upgrading the fuel pump and injectors is essential to reach my goal?

[@highwaterprospecting1971]

Great video!!!, I have a 2004 TT 225, 6 spd, Quattro. I have .5mm overbore, forged je pistons, 5valve relief, coated, 9.25 compression. IE rods, forged crank, arp, main studs, rod bolts, head is a new blank, i did gasket matching(for a large port), supertech valves (single keeper seats),supertech springs, IE camshafts(street/race).fmic, 550cc injectors, Garrett 60-63 dual ballbearing, 3" ss cat deleted exhaust. Revo tech mapping by novitechtuning, out of Miami fl. porsche brake upgrade, coilovers,swaybars, . Its a beast!! Love it!!, but i bought it mostly this way excpt new engine internals. As i blew the original motor killing a camaro on the freeway.😂 Now my question, who sells heavy duty cv axle for these cars, they are on mine but i cant seem to find any.everytime im told they are heavy duty, i bring them home and they are half the diameter of mine. Please help. Ty , steve

[@freddywebb9645]

I have polo 9n3 gti. R8 Coil packs, water meth inj, full exhaust, hybrid turbo, fmic etc. Im at 312hp and 444nm. Stock internals, original clutch, 220 000km.

[@freddywebb9645]

And many front right tyres 😅

[@torquecars]

A small price to pay for so much fun.

[@enzoUKSC]

Interesting Who mapped your polo ?

[@veedubluv]

Alright 👍 I have 20th Anniversary "Jazz Blue "1.8t. Great Information 👍 👌

[@c-bone9182]

2000 Passat ANB, greetings from Germany 🙂

[@shanecrf4509]

2003 Audi a3 1.8 turbo aum engine running a KO4 turbo front intercooler stage three 3 inch exhaust straight through I love them they absolute weapons, but I’ve killed six turbo on this engine so far 😅 1205000 on the clock

[@davewagner5618]

Very informative video. I have a 2001 Audi TT 8n mk1 roadster 225hp quattro. Like to hear your thoughts on the exhaust. Thank you

[@matthewbrough1800]

Just found this video. Quality info here. I've got 2 2000 New Beetles both are 1.8T 5spd. One the body is trashed the other the engine is spanked. Making 1 good one out of two. Ibelieve it's the APH head, where does that fall?

[@chuckydreal9040]

Cool video mate, I've watched you before and like what your doing. I got an a4 1.8t bex. Some idiot had put a k04 on without tune or supporting mods and it blew its self up. I am putting it right and have put a k03s bk on, new waterpump, thermostat, proper fully synthetic oil, changed the timing belt plus tensioner. New solid front subframe, brake calipers on the front, discs, pads on the rear. Getting a bit of overboost still, but will be replacing n75 for standard vag part. Really good cars if looked after properly.

[@torquecars]

It depends on what you need, personally I avoid those with a DPF as I do lots of short journeys. The TSi is better suited to me and I like the wide power band but my 2.0TDi pulled like a train and gave great fuel economy. With the same power the TSi will generally win in a race but the TDI running costs are generally lower and more reliable.

[@samuelmansell9749]

Just picked up my second 1.8 20v in the Mk1 TT Quattro 180. Previously had a Cupra BAM and fell in love. After putting the deposit down after hardly driving it I feared the trip home would be as smile inducing as the 225 but even with the faulty N75 it’s got a good grin factor. I’m wanting to do a little built with it and I’m just wanting to know if the AUQ (I think that’s mine) has VVT and K03s?

[@matthewroth2208]

I have a 1.8t aeb engine in my 02 Jetta with the me7.5 ECU for the 02 1.8t awp engine

[@luisbaldera3447]

Very good and explicit ! I have an a Audi A4 B6 2004 USP 1.8T Quattro 6sp MT K03s Apr stage 1+big intercooler 3’ downpipe 3’ k&n cone air induction kit 386 Cc injectors forge valve and hose 3’ ,looking for a turbo upgrade and fuel pump and that would go with a remapping stage by APR ? And clutch not to hard maybe stage 1 with a lighter flywheel? Thanks I will appreciate your response

[@jasondonavich2758]

I've got a 05 Audi tt mk1 180 FWD but is mapped to around 210bhp. Anyone with the FWD versions the traction control issue is a big thing, my wheels spin like crazy if I floor it at lower speeds.

[@RSTao77432]

Got a 2009/2010 Skoda Octavia estate, with one of the Audi TT bam engines in it & looking for different upgrades I could do to the engine.. just ordered any induction kit off of eBay, but any suggestions what else I could change on it to increase torq or horse power?..

[@jonathanhenry4843]

What about Audi tt mk1180 quattro ARY engine not in the list ?

[@derrickknighton218]

2001 VW Beetle 1.8 Turbo GLS where can I go...looking for the maximum upgrade in Motor and Automatic Triptronic Transmission much more relaxing driving,than my previous 2001 VW Beetle 2.0 manual shift naturally aspirated Motor

[@ByBojanTM]

I have A4 BEX 1.8 t quattro with two intercooler. What i should to do than i can have normaly 250 hp?

[@lukapetronijevic9716]

Have both AEB a4 '98 110KW limo and AJL A6 '98 132KW AVANT

[@ccw5886]

Just purchased a fabulous 225 TT Quattro, one owner , 49k and thinking about a stage one . Just want to sharpen it up. Good idea? How much improvement can I expect

[@lorenlevanic3170]

I have a question whats different between large port size head and small port size head

[@TomasZacharovas-i9w]

Brand new in to tuning, just started to find out there's formulas for choosing turbos and such, but i've got a 1998 1.8t quattro audi c5 sedan, pretty heavy car tbh, although i'm still dedicated for it to make 300+hp, and i will be trying my best to figure out a way to get a bigger turbo in it. Still don't know if i'll need a IC or better injectors, practice makes perfect haha. Any tips would be much appreciated:).

[@semii2744]

I have a rusty 1,8T Passat 2004 Combi B5,5 32k miles, u think it’s worth tuning or should I buy BMW 335D?

[@cathleenmurphy536]

Boss vid mate recently bought a4 2002 avj unfortunately but big plans good info ta

[@torquecars]

Thanks for the support my friend, good to have you aboard.

[@_zmeu]

What about k04-015 from longitudinal?

[@aryamanraghuwanshi8838]

Hello Sir, This video was helpful to me. I live in India where the car culture is touching the peaks now. I am planning to buy Octavi vrs Mk1 which comes with the same engine which the video was all about. I need your further assistance to upgrade my car and will surely be needing parts for it. Please help me with it. Thankyou

[@EH-3829]

Hello bought audi a4 b7 quattro with bfb engine what should i upgrade

[@everythingintheworld1891]

Hi I have one Audi A3 1.8Ts quattro 180 hp. Model 2000. Engine kod AJQ which upgrade turbo can i have. I'm thinking about one K04. which K04 turbo fits my engine. Thanks 🙏

[@sydallen4381]

Great video, but a bit confused about the injectors discussed around 27 minutes. I have an APX engine, K04 turbo, 2000 Audi TT quattro 225bhp/165kw. I'm thinking of a remap. Your video says that the APX usually have the Bosch 315cc injectors, but also says the K04 turbo models typically had 386cc injectors. How do I tell what my engine is fitted with, before I get the larger injectors? Thanks.

[@torquecars]

Yes it is extremely confusing. Different cars from the VAG group in different regions met different specs and some years had other parts thrown in. Understandably the info online is very contradictory and I rewrote this script quite a number of times but this still slipped through :( ! Any injector quoted capacity on these is generally - or + 28ccm at 3 bar. The rail pressure has a bearing on how much an injector delivers so raising the rail pressure will extract more, and a worn engine may report much lower when measured. From what I can find your 225HP APX with a K04 used 06A906031J with an average flow as per the listing in ETKA and ELSA : 358cc so between 330cc and 386cc. Your local dealer should be able to confirm your part number based on region year and model spec.

[@Simpleman1078]

​@@torquecarsgreat video

[@irgio2263]

I have a 2009 a3 8p 1.8T. I want to upgrade to produce avout 300 hp. What are my options please?

[@tolgaerdinc7191]

I drive a 2014 Passat 1.8t tsi trynna build more power to unlock the full potential of this truly beautiful car

[@tolgaerdinc7191]

Stock tho it doesn’t do too bad with nearly 200 horsepower

[@stuartcerdasabarca9771]

Hi, nice video , I have a question, if I install a solid mass clutch instead the floated bi mass clutch could it generate more vibration or any issues? Audi a3 1.8T 8L

[@torquecars]

Glad it was helpful! Thanks for the support and encouragement my friend. You will get more vibration, but these engines are fairly smooth and the transmissions are fairly strong. Ask around and see what feedback you get from the many forums, personally I would go for it but not too light on a road car.

[@ctaylor680]

I have a 1.8 SEAT IBIZA FR 20V T (150) atm it's at 220bhp

[@sol-hb8zg]

I recently got a Leon 20v cupra and it’s solid but there’s an engine light. When I scanned it it said the MAF signal is too high. Do you think cleaning out the maf will help or would you replace it? It’s at 120k miles

[@dadethomas8680]

Had I 04 passat 4mo with a decent amount of work, stage 2 ra4 clutch conversion, ko4, 550cc injectors, 5 bar fpr, fmic, stage 2 tune with a local company. Full evap delete and and cold air intake with a box to cover the heat from the turbo and downpipe. Man she was mean sleeper that's for sure. But sadly trying to find massive boost leak led to a bad rear main seal. Before I could get to fixing it I made the stupid decision to race a car worker and through a hard misfire in 4th gear at 22psi and blew the motor. Just picked up a bone stock 03 passat with low miles but sadly it's fwd so I'm limited on how much power I can put to the wheels this time around

[@larrywickertv6309]

what up doe! im all the way from detroit mi. hope all is well.i have a mk1 180 horse front wheel drive.need more horsepower

[@aarongrant6439]

Just got a beetle 05 What engine is that 150bhp but it dont feel standard

[@ΓρηγόρηςΚωνσταντινίδης-μ9ρ]

In seat Leon 2004 1m 4*4 20vt can change the gear rarios at 6th gear or the differential from 2wd? Or something else?

[@gregorpaas1538]

1997 audi a4 b5 quattro 1.8T AEB chip tuned. 2005 SEAT Leon FR 1.8T AUQ

[@christoharber6563]

you talking about the conrods the block it's over 1000 horsepower rods 400 Newton metres is the max then it will bend

[@torquecars]

I am actually talking about the "entire engine block assembly" for ALL 1.8T engines but I had to go with the weakest common denominator for what is a very general introduction guide to tuning these engines, otherwise people will complain that my advice broke their engine or they didn't achieve the power I told them to expect. (NB: We include Seat and Skoda brand cars with this engine here in the Uk also.) Most will see power far above 350hp on this amazing engine without any problems at all usually around 500-600hp in my experience. I have a few reports from our members of issues around 400hp but these seem to be the exception rather than the rule and when I look into it there were other factors involved, typically poor tunes or low quality parts. I do tend towards a cautious approach to upgrades, so if your target is 350 don't worry strengthening anything, if you are going higher you need to do your research carefully especially on the parts fitted inside your block. I am working on some more in depth guides to these engines especially since there is more data and information for me to work from now. Regionally there are quite a few differences. Your comments and pointers will certainly be taken into account in the next video and I thank you sincerely for taking the time to pass this on to me.

[@bradleychetty5805]

I have a audi mk1 tt 225hp quattro. Would love to know more

[@torquecars]

I'll be dropping a video on the TT very soon and I'll make sure I cover the 225. The Mk1 was a lovely car, probably one of the last fantastic Audi sports cars before they went emissions compliant crazy.

[@brucejones7389]

I have a 2000 A4 B5 1.8t ATW but I have an automatic so it sucks...The trans slips so the car has sat in my yard for a number of years

[@CarringtonHollister]

2002 Passat GLS sedan (saloon) in Fresco Green Metallic and ash velour interior I named her Danielle she’s a February of 2002 production car, she was born with an AWM 1.8t and 5 speed Tiptronic automatic transmission.

[@walther89]

what is the headgasket thickness ? if i planning to use forged pistons etc, 600hp range is the goal. Do i need cometic or athena gasket ? or oem elring is fine ?

[@anonlincracing2484]

Iv got AGU with a k04 001 xl 4660 mambatek turbo 😅

[@davidrussel272]

I have vw citi golf shell l want to install the 1.8 t 20 v what do l need to do that .am from south africa durban

[@griftor2345]

I have a Seat Leon Cupra R bam 225 and love the 1.8T

[@torquecars]

Thanks for the support my friend and welcome to the channel.

[@damonbreed4714]

I got the 2004 audi a4 avant 1.8 t currently running 190 bhp standard. What do you suggest as first upgrades i am looking for abit more power but nothing crazy as the mrs drives it lol. Any help and advice appreciated

[@torquecars]

A simple remap/tune will do quite a lot for a relatively small outlay, after that you are looking at turbo upgrades and turbo swaps, the K03s is a pretty good cheap upgrade from the K03 if it doesn't have this already in there or a K04 but this is probably a bit too extreme for you if you want to keep it simple.

[@phulei]

I have a 1999 Audi TT mk1 AJQ engine with a K03 turbo. I want to upgrade the turbo. Will a K04 be a direct fit?? Thank you! Also from my understanding, I'll also need a FMIC, good turbo oil lines, wastegate, CAI, BOV, larger fuel injectors, upgraded fuel rail and a wide-band O2 sensor. Also I'm planning to get a stage 2 remap with REVO. Am I missing anything? Thanks again

[@torquecars]

K03 to K04 swaps are quite popular but beware there are subtly different versions of the K04. So an early K04 will usually bolt straight on to replace an early K03. On some K04 swaps you might need to relocate some of the turbo ancillaries. Transverse and longitudinal engines had different turbo pipework and layouts. Your list seems pretty good to me but the air intake MAP/MAF will probably need an upgrade to. Hope that helps and I'm sure someone more knowledgeable that me on this will spot your question and add their experiences and tips.

[@brandymaboy1979]

Check out the K04-001. It’s apparently the K03 with 04 internals and like the man says bolts right onto the og manifold. Never met anyone yet who can say they did this successfully though. Won’t be an off the shelf tune as the cars they came in were very low power.

[@johnhardiman1406]

I've a 2001 1.8T Audi A3 8L AUM. Totally stock, and it has just ticked over 434000km.

[@torquecars]

Nice, they are great engines and so seem to go on forever. Wish they still made them like this.

[@hristokoprivtchin6812]

Hey there brother, how's it going? Your description in clean and the video is good thank you for taking your time to compose the information. I drive a Audi TT 1.8T Quattro 225 and I'm now getting a new exhaust and I'm thinking about putting a 3inch on the downpipe and a slightly smaller exhaust by the midpipe then keeping the back box and exhaust tips stock what do you think about that?

[@torquecars]

They are great options as long as you can avoid steps in the pipe and have gradual changes it should flow nicely it is the cats on the early ones that are quite restrictive, I see we have quite a few TT owners on here, so I must put together a guide for this great car.

[@ashkori1993]

Has the AQA engine forged cranks?

[@Klipz1273]

@torquecars the yellow Leon was mine 🙌🏻🤙🏻

[@torquecars]

AH cool, good to meet you my friend. It is looking great. What is your spec on this? It sounded really nice as you left the show, sorry I didn't get a chance to chat with you there.

[@Klipz1273]

@@torquecars responded via fb as it keeps deleting my comment

[@Simpleman1078]

@@Klipz1273 nice audi bud

[@Simpleman1078]

​@@Klipz1273nice car bud