CarVertical: The History Checking Service Use this link or code "JAYEMM" for a discount! www.carvertical.com/gb/landing/v3?b=1e4c9523&a=JayEmm&voucher=jayemm&chan=jayemm
@McpikieАй бұрын
Lee has that look of a man who just wants to be left alone 😂
@nakoma5Ай бұрын
IKR, everyone looked like they wanted to be left alone. xD
@shineybikecarsАй бұрын
Not too much chat back and forth 😮
@mariemccann589529 күн бұрын
Probably just didn't want that prick up his backside.
@TML3429 күн бұрын
He ain’t got time to bleed!
@g.w.customcreations353429 күн бұрын
Yeah, seems a lot like an old school welder. "Just piss off & leave me to it." kinda guy. 😂
@gileskАй бұрын
I like this type of video, for 2 reasons, 1. Just nice to watch and learn, and 2. See someone like me on the spectrum finding a great outlet for it. 😊
@guss2099Ай бұрын
I had a 2007 987 Boxster S for 4 years. Sold it last year and regretted doing it. Although the road tax now is an extortion, that was the only car that never let me down. These are built to be used, not garaged like most rich folk do. As per rusted parts, due to salt on the roads and no one really washes them underneath like we do in Italy. Smiles per gallon overload!✊🏼✊🏼
@JonathanTraversАй бұрын
Interested to know how much the tax was in Italy? In Ireland for a 2007, it would be €1809 per annum 🤢
@GadgetMartАй бұрын
Really omg
@arnoldmiga568929 күн бұрын
@@JonathanTravers I know the pain as I drove S-type Jaguars back in Ireland. The tax was the most sickening thing right after insurance. There were cars I basically could not own. I had a modded S14 Siliva with basically invalid insurace due to mods. Now, in Switzerland, I drive a Z4 e89 and a 5 series F11, both 3.0 turbo, road tax for BOTH is 838 CHF (CHF is almost the same as EUR). The tax is based on weight of the car and I have one number plate I switch between cars - a brillant system because I would never drive both cars at the same time. Tax for Z4 alone was 600 CHF if I remember correctly. Same for insurance, no problem having ZERO NCB, no problem owning modded car if the parts come with certs of compliance and installation of parts is signed off by competent garage. NO surcharge for mods. Insurance on both cars, with 50k km per annum declared, one in garage, one outside (higher risk of hail damage) - 1300 CHF. It can be done in Switzerland where the wages are higher and where there is an option of public transport, why it can't be done in Ireland where car ownership is a must? Jealousy of people for having something nicer than paddy spec micra or corsa 1.0? Now not so rosy part is that I have to drive to Germany to enjoy my Z4 due to extortionate speeding fines and super lame low speed limits but I can live with it.
@JonathanTravers27 күн бұрын
@@arnoldmiga5689 wow, that's a great system. Yes, Ireland is not a good country for car fans unfortunately.
@glenkivell5961Ай бұрын
Lee is a legend on Porsche Engine Gurus, He has pointed a lot of people in the right direction with faults etc.
@leejenkins190528 күн бұрын
Thank you @glenkivell5961
@oliverradcliffe797427 күн бұрын
And now he's famous 😂
@NeilWatt-p8jАй бұрын
Love the quote from Full Metal Jacket "There are many like it but this one is mine"
@EksistenssiАй бұрын
"this bore scoring is mine"
@GadgetMartАй бұрын
Like any machine, it can be fixed.
@adammoreveАй бұрын
I used to build modified engines for road and race with individual throttle body, the bonus of using individual throttle body is the smoothness of engine talk that they supply throughout the power range, the noticeable difference in throttle response and the speed the engines would rev's, along with adding the most fantastic intake raw. If I was to rebuild any engine, this is the first change I would make along with porting and polishing the heads and changing the exhaust system. Good luck.
@qikqbn7726 күн бұрын
Appreciate you Lee giving this forgotten Cayman the love that it deserves. Even the idea of a 4.1 liter engine sounds amazing. I would like to say, that after owning 5 different Porsches with these engines and driving over 400,000 miles between them, that my experience has been that they are delightful engines. Bore scoring seems to be an issue you want to keep an eye on. I send my oil in regularly for oi analysis which will give you an indication of your engines health. Bore scoring is not necessarily a death sentence. There have been many drivers that have added an additional 50,000 miles onto their engines with no issues even after the first signs of bore scoring. Even then, the only reason they rebuilt the engine was do to the annoying ticking sound from the scored engine, not because of performance or lack of performance. Depending on the car, 50,000 miles at 5000 miles annually is 10 years of ownership that you can wait before doing that rebuild. Just something to keep in mind. Bore Scoring is not catastrophic and instant dead engine like the exploding "too small" IMS bearing from 2001-2005. Keep up the great work. Looking forward to seeing your journey!
@I999-g2sАй бұрын
Bought myself a gorgeous low mileage 997 C4S x51 with PCCB’s and FSH. Paid good money given the options and condition. 5 years later, spent more than I did on the car, on a 4.3 conversion with Nikasil liners, titanium rods, high lift cams, high volume injectors etc etc. Makes just under 500bhp and has huge torque. It’s now my summer daily and miss it hugely, now winter has begun.
@EvoraGT430Ай бұрын
Why not keep using it?
@I999-g2sАй бұрын
@ they salt the roads where I live. - a lot!
@JimMammen29 күн бұрын
I just subscribed to this thread. I used to have a gen 1 Cayman S. Zero problems but for past few years a 911 997.2S. However, mostly because I got familiar with Hartech a few years ago. I used to be a moderator on the main Porsche forum and somehow got stuck playing referee between the owners of Hartech and the US Porsche rebuild guru. Both of whom are super smart very nice guys but folks can disagree. I seem to remember it started with what exactly is the cause of bore scoring on these engines. Ended up who did or didn’t pay for advertising. Internet Brands business office should have been their issue but dumped it on me. I’m not there anymore so whatever. Looking forward to this story going forward. Owner / founder of Hartech Baz is an older guy and an engineer. Worth following.
@TraneFrancksАй бұрын
Jay, I'm a huge fan of fixing broken shit. Good on ya, man. Keeping the original kit in good nick is a great thing. I highly, _highly_ approve.
@arthurdardalisАй бұрын
I’m an ex-Porsche technician, the IPD intake plenum and GT3 throttle body show very noticeable improvements. The best exhausts for Porsche’s are made by Cargraphic in Germany, I’ve fitted loads, superb quality, noticeable power gains,
@f.kieranfinney45729 күн бұрын
I lost a good bit of throttle response on my base 987.2 low down with the plenum/throttle body upgrade. But mid-range torque went way up. According to IPD, the 2.9L especially benefits from this mod. It was tough to do in my driveway but not impossible.
@salvissmudo449629 күн бұрын
@@f.kieranfinney457 Do you have sports chrono on your 987.2? Sharp throttle response in sport mode is one of my favorite features, that I would not want to compromise. Perhaps, IPD plenum version with 74mm OE throttle body might be more suited for 2.9 base version?
@f.kieranfinney45729 күн бұрын
I don’t think you’d pick up much power without the bigger throttle. The whole point of the plenum is to accommodate the bigger throttle body, really. It’s doing heavy lifting as much as the slightly different plenum shape. It’s slow off-idle. Big whiff of hesitation. Low down it’s a bit slower overall but over 2k it pops to life. You don’t get bigger torque without lots of O2. And if you’re puddling around town it’s ok. Once it’s boiling it’s nice to have more shove. It’s a less frenetic process to hustle it really fast. And let’s face it, Porsche engines could all use a bit more torque. I have my throttle pedal’s response absolutely cranked as well. Backing that off might match things up better.
@simonyoung90824 күн бұрын
Yep got that whole setup, plus Cargraphic full power kit.
@JelloTypeRАй бұрын
Excellent video James. This kind of content that actually shows and explains the oily bits of engines is usually glossed over.
@tonyquickpastaАй бұрын
Really interesting video Jay! Thank you. I'm looking forward to Pt 3. Great to show off the good work they do.
@smithp573Ай бұрын
This is one of your best videos ever.
@andycunns42695 күн бұрын
Hartech 4.1 is a GLORIOUS thing ... my 997.1 absolutely sings ❤
@converge8008Ай бұрын
I love a weekly dose of JayEmm, LOVE THE HEAVIER ENGINEERING SIDE!!!
@mrflippantАй бұрын
You should go check out @M539Restorations if you want some serious wrenching pr0n. Good one to start with is his Project Marseille M70 V12 rebuild.
@davidmoore6172Ай бұрын
What an amazing insite Jay, if your new cylinder head ports are as polished as your presentation skills the motor will be a peach. I wanna see 400bhp that will be one sorted Caymen.👍
@nickbrennan243221 күн бұрын
Enjoyed this one. My dad used to take his 968 to Hartech back in the day and always had good things to say about them
@LouieJackson-lj2fjАй бұрын
Porsche is a very good brand when I was 7 I went to a Porsche dealership and they gave a tour and a look around the cars had a sat in a couple of the cars they also gave a gift bag and there customer service is amazing 😊
@marcusgeorge9140Ай бұрын
I did the same at 8 or 9 ….. now (at 54 🤦♂️ … ) life permits and I have a gorgeous racing yellow 981 S … it’s fabulous!
@f.kieranfinney45729 күн бұрын
You haven’t been to my local dealer. They’re absolute wankers. I was having a part evaluated to see if they would repair it in hand or require the entire car to be present (they eventually chose the later and still couldn’t fix it). While I waited I went to their snack bar and reached for an M&M. Had my hand slapped. “Those are for full service customers”. Ultimately I had the problem solved for $50 by a local independent.
@LouieJackson-lj2fj29 күн бұрын
@f.kieranfinney457 was this in the UK or us
@conanius14 күн бұрын
Great to see this video. Thanks for sharing your journey ! I've got a 987.1 Cayman S (Bore score clear... for now !) - I imagine Hartech will do the cold temp thermostat as part of the rebuild, but I also got a larger and baffled sump (FVD, but Hartech make their own too) and the Centre Radiator Kit (as fitted to tiptronic cars, available very cheaply with official parts on places like eBay) to try and keep temperatures under control and give the engine the best chance of staying healthy. Really excited to see the capacity increase coupled with the new heads - 400bhp might be achievable, but the mid range shove should be fantastic. Edit - with regards the brakes, I fitted a GT3 Master Cylinder, Braided lines, and RBF600 fluid. Its made a huge difference to the feel and quality of the brakes. You can get the GT3 part that is made by TRW far cheaper by getting it without the Porsche sticker on - PMN166 is the part number. Building my dream spec car - please keep us up to date :)
@solemods599128 күн бұрын
More of these videos, please JM. Love this sort of stuff, and these types of cars deserve to be brought back to life, not put on the scrap heap 🤜🤛
@MadMike99119 күн бұрын
And this is why I bought a 987.1 base rather than an S! Great video though, the 4.1 should be awesome!
@TexasRiverRat31254Ай бұрын
Great presentation of bore scoring! I'm looking forward to see how this turns out.
@Christianfire18Ай бұрын
Really like the storytelling in this video, super interesting to me as my dad picked up a 987.1 cayman s a few months ago, so seeing a teardown like this is awesome
@garyperser223220 күн бұрын
I too own a 987.1 Cayman S, and I had engine failure due to cylinder #6 bore scoring, and I too had Hartech upgrade my engine for road use and occasional track days, about 4 per year. Hartech built mine to 3.9 liters, and I upgraded to forged pistons and rods to go with the closed deck upgrade. I kept the stock intake, heads, and cams because my goal was not more top end power, but more low and midrange torque. I strongly suggest Soul Performance Products Street Package, which includes Type 304L stainless steel long tube headers with integral HJS sport cats, sport mufflers, and tailpipes. Not outrageously expensive like Akropovic, but expensive. Better than Porsche OEM quality and much improved sound. Great bolt-on system that actually fits.
@deadprivacy19 күн бұрын
@@garyperser2232 if its always number 6, presumably 5 too? Rebuilding with ever so slightly bigger piston/cylinder clearance/s than the other 5 or 4 pots might be an idea. I think its a ford powerstroke v6 they do this too regularly as the back two regularly over heat and over expand and rip the bores up.
@duncanajpv815 күн бұрын
Super video James, wish you all the best with this fantastic project!
@DG-rk5mr18 күн бұрын
Love this series of videos, you narrate the work well, super informative and I'm looking forward to the next episode.
@MAXREVS29 күн бұрын
Always liked your videos, this one was just epic. Have keenly followed everything you’re doing with your 987 and cannot wait until Jan for part 3. I’ve stopped making Cayman videos but love the fact you’re still making Porsche Cayman content.
@JayEmmOnCars29 күн бұрын
Happy to have you here :)
@kylem324Ай бұрын
Enjoying this series. Hopefully you get great results from it and the Porsche power gods smile down on your build. I’ve seen both great results from bore/striker builds, as well as builds that only match a Carrera S despite more than 0.5L of extra displacement.
@andrewellis5092Ай бұрын
Utterly fascinating. I love an engine strip down! ❤
@sintjinansley6107Ай бұрын
Big fan of the project. Thought this video was fantastic as well, great job.
@jamesonslow24 күн бұрын
Such a good video. A proper technical one with the comforting and familiar bonus of JayEmm's presentation and narration skills.
@woodrimcars232429 күн бұрын
Wow very informative indeed and having had a 987.1 Boxster S for 6 years I feel very lucky. I did do the IMS seals 2 years ago as I was annoyed by the oil leak. All done in my own workshop here in France.
@pasha1234329 күн бұрын
Interesting video , Hartech looks like a great set up 👍😎
@jackrech806727 күн бұрын
Well done, Jay! Entertaining and informative! Exhaust system/ intake options could almost be another episode!
@MarkJohnson-wp1ppАй бұрын
What a great video Jay. You've done this very well and this type of technical content is both fascinating & very watchable. Great job
@thedrivebygg26 күн бұрын
Great video, excited about seeing it get put back together.
@guyroberts9963Ай бұрын
Looking fwd to this project James. I will follow you all the way. Im a 997 daily driver, knocking on 200k and counting and do ALL the repairs myself. I think ive pretty much touched on all the wearable items, including replacing the AOS myself (horrible job). With alot of commonality in parts i will be watching with keen interest. Good luck.
@johnharrison844227 күн бұрын
Great Video Jay, love that you give enough technical input without it getting in the way of understanding the topic. As a Cayman 2.9L it's always intresting to see the engine, as you can't in the car. Cheers, and onto part 3 👍
@LC-rj6ok20 күн бұрын
My 987 R had a limited slip diff, think it was standard for the R's. Definitely have one in, I could always feel it doing it's magic when needed.
@thomasshoaf944022 күн бұрын
Thank you for doing this build! Bore scoring with a need to do a rebuild is always in the back of my mind with my 2008 Cayman S. Once you get to the suspension I highly recommend the GT3 control arms and Öhlins Road and track coilovers. Excellent for on road use and occasional track/autocross.
@NigelDeForrest-Pearce-cv6ek25 күн бұрын
Fascinating!!! Godspeed and Good Luck!!!!
@joshswan06Ай бұрын
Loved this one can’t wait for more.
@chrisl268129 күн бұрын
"There are many like it, but this one is mine." Kills.
@tomweller1318Ай бұрын
Enjoyed this really interesting. Thanks James 👍
@0xFluke22 күн бұрын
Finally some hard answers on these engines 🙏🏼
@OliverIskraАй бұрын
Love the edit. Looking forward to following this journey!
@Steve-t7lАй бұрын
Quite incredible seeing how many parts go in an engine.
@simonhughes7382Ай бұрын
Brilliant project! Now this is what I want to see more of :D
@davidwalker7389Ай бұрын
I have the old Hartech 3.9 development Cayman S. it’s bloody awesome , you’re welcome to have a go if you’re ever in Derbyshire ha
@leejenkins-zl5xvАй бұрын
My favourite car that David
@kineticU23 күн бұрын
Love this video. Great to see a Porsche rebuild. Cheers from USA. But still sorry for your expenses. Hopefully you find the results perfect.
@jamesonslow24 күн бұрын
It amazes me that with all the technology we have today, the best tool for bearing the load of a car or an engine on a jack is good old a block of wood. We all have our own favourite block of wood for this job, admit it. 🙂
@johnwilliams7278 күн бұрын
Super excited for this build
@wamgocАй бұрын
James, I’m interested in buying myself a Cayman S, and so these videos are very interesting! I to, am coming around to the realisation that buying an older car instead of one of the over specked EVs or Hybrids, that are on offer, is the more sensible option! Looking forward to the future videos!
@bennyperez8334Ай бұрын
James 981 cayman track junkie here awesome unique content cheers from USA👍👍
@kurtmoore57425 күн бұрын
Hi Jay - I have a Soul exhaust system on my 986 and love it. Simple, light and reliable. And nice vid - thanks.
@seanstein831329 күн бұрын
This is fantastically well done man
@bigchopper1429 күн бұрын
Was great to see how the professionals at Hartech make it look so easy, when it isn't. Look forward to the next episode.
@simonyoung90824 күн бұрын
On my 5th Porsche of 30 years with the marque, 2nd Cayman, now on Cayman R with IPD Plenum + Cargraphic ECU and power kit. 200 cell cats Custom flash. Ohlins shocks, GT3 brakes.
@maz2044Ай бұрын
Looking very fit and healthy sir!
@psmithardАй бұрын
Second this.
@AF072Ай бұрын
Loving how this build is progressing! I have an early 996 C2 and dream of doing the EXACT same thing to mine but unfortunately the engine runs well.
@petersmith2650Ай бұрын
Me too! My 996 doesn’t drink any oil. I was asked ‘what do you do if you get bore score?’ Reponse, perfect excuse to upgrade the engine.
@TomSL55AMGАй бұрын
Awesome walk through. It just might make me build one!
@crazyjay7676Ай бұрын
I like the Full Metal Jacket reference to your engine.
@JayEmmOnCarsАй бұрын
That film school education paying off at last
@RichardHarrold19917 күн бұрын
@@JayEmmOnCars at least this way you don't end up with a Full-of-Metal Water Jacket...
@PenryMMJАй бұрын
Placing my bet: It'll come out OK, because James does cars properly. But it will be expensive....
@benpenagonzales6014Ай бұрын
Exciting James! When I bothered to read my 996.2 service history it had a full engine rebuild but only new pistons and liners on 4,5,6. Every little helps I guess 😂
@caymanjoe2527Ай бұрын
This is probably the best video I’ve ever seen loved every minute of it…
@MF-jp5vp22 күн бұрын
Fascinating! Big Thanks.
@darren234624 күн бұрын
We need more videos like this!! Amazing!!
@jamesgreenwood946423 күн бұрын
Great video as always… would love to see a detailed video on the engine build / spec (please!)
@daggidding4478Ай бұрын
Great episode, James! I love these type of in depth items. And then, of course, commented in your understated humorous way 😁👍
@twistedgaming845029 күн бұрын
Own a 987.1 and love it, have had the carnewal exhaust fitted originally which was good as was louder then stock and had no drone but missed the gt notes at higher rpm much like the oem exhaust. Switched out to a valved designtek exhaust last summer and my did it change the car! Valves closed you can pootle about like oem and then when you want to give it the beans on a b road flick open the valves and listen to it scream at redline with similar notes to the gt3’s. Overall comes down to personal preference but a lot of the 987 exhausts are just carbon copies of eachother with different pricing and for the price of the designtek one it’s hard to beat!
@GM-fh5jpАй бұрын
Good video project, James. Seems to be a good deal of interest in the comments so far. Looking forward to seeing this one progress to completion (Rattarossa take note)
@peterdenyer3441Ай бұрын
Was only thinking a couple of days ago when we would get a Cayman update 😂 want to thank you for your hard work, everything you upload is a dose of automotive therapy against a world of beige garbage.
@JohnCIronsideАй бұрын
Great video series. Very informative and as ever, impeccably presented and arranged. Look forward to the next instalment.
@RunningFast25 күн бұрын
Definitely do the LSD. I have a stroked 4L cayman and have driven 4.5L cayman, you have to remember it's not just power, the big block is going to add a huge chunk of torque that will absolutely roast the tires. Honestly, all this work is almost wasted without an lsd to get the power down. You might also be doing yourself a disservice by not going to a larger intake, at least a larger center plenum so you can fit a larger tb.
@iancharlton678Ай бұрын
I did contemplate a very affordable 911 with known scoring, intending to go the Hartech route…….. then balked 🙁 It took a lot of thinking, but in the end I had to get some Mezger DNA……… my 996 turbo coupe is my forever car, silver with carbon stripes and black Fuchs (lookey likey rims), last seen in the JayEmm parking at Porsche in the park 🎉⭐️⭐️⭐️⭐️⭐️ Looking forward to seeing this completed……..🎉
@Gorbyrev29 күн бұрын
Loved that James, great video. Well done sir. Looking forward to part 2.
@misterdroneboy8999Ай бұрын
Brilliant video! Great to see you mixing it up
@ian_98729 күн бұрын
Really nice cinematography in this video, helps to make an already interesting teardown more compelling. I would be weeping at the invoice though.
@tonyharper560429 күн бұрын
Just on exhaust and manifolds, I have a 996 and went Top Gear headers and Milltek Super Cup exhaust and very pleased with the combination. No drone but nice, throaty sound under acceleration. I believe both of these are available for the Cayman.
@createanddestroy27 күн бұрын
Exhaust upgrade that is worth it, Carnewal GT Exhaust, you have to ship your exhaust to Belgium, but Gert does a lovely job in modifying the exhaust and making it sound fruitier without making it too loud. ;)
@MichelHenriTonneauАй бұрын
Lovely time; quite exiting to watch part 3 indeed
@09juliancarrАй бұрын
Loved this video James, great job on presenting, filming, sound and editing
@timmusick987529 күн бұрын
Well done! Looking forward to your updates.
@speedybenАй бұрын
Good to see an update on Project Better-er!
@christianprattАй бұрын
It’s the full works then! You’ll have one of the nicest engines anywhere once that’s all tweaked and improved and back in the car. Much to look forward to. 👍
@Spenny909Ай бұрын
KZbin needs to enable a double-like button. Nice watch, James.
@Spenny909Ай бұрын
Another one for the JayEmm drinking game, 🍸 each time James looks at his Nove watch.
@katiefenn104927 күн бұрын
Best video you've ever done 👍
@dwarfyh32Ай бұрын
Mine 996 is circa 380bhp and 460Nm with the crusty stock exhaust which I do need to replace fairly soon so you should easily see well over 400bhp with the Slakker heads fitted and a decent exhaust set up . For road use I havent found the standard brakes leaving me feeling like it needs more stopping power but more is always a good thing. Bet you cant wait to get it up & running now
@davebarron593929 күн бұрын
So nice you have exceptional experience at video / movie making, your background music doesn't overpower your voice. Thanks.
@warrenlucier5796Ай бұрын
The Cayman R has an LSD, but I recommend fitment of the wavetrack assembly.
@markhumberstone7068Ай бұрын
very interesting, look forward to episode 3
@user-sg6xv2kb8s29 күн бұрын
That music is rockin' 🎸
@jpt75729 күн бұрын
Thanl you James. I enjoyed this video.
@adrianbennett3761Ай бұрын
A Cargraphic exhaust might be the answer as the Akropovic ones are extortionate
@JayEmmOnCarsАй бұрын
Cargraphic isn't cheap!
@adrianbennett3761Ай бұрын
@ Cheaper than Akropovic. A lot of KZbinrs use Miltek, Scorpion and Quiksilver. One of those might do you a mega deal
@johnsnowdon293929 күн бұрын
@@JayEmmOnCars very good quality for the price though. Just fitted one of their wastegate bypass pipes to my 1993 964 Turbo (it's a peculiarity of the way the single turbo on the 930 and 964 Turbo is mounted that the left hand exhaust is basically just connected to the wastegate), and it's gorgeous; much better than something like Fabspeed. No Porsche exhaust is 'cheap' though! :D
@TML3429 күн бұрын
@@JayEmmOnCarsMeisterschaft. Get it just for the name. 😅
@andyglastonbury603224 күн бұрын
I put a Cargraphics cup pipe and Cat by-pass on my 964 about 19 years ago. Still perfect👍
@kaiharrod28 күн бұрын
Have 987.1 3.4s too, whilst the engines out, if the 2 rear brake pipes (hard lines) haven’t been replaced do them, and whilst it’s off road I’d do the rest of any originals, you’ll thank me later!!! Brakes- properly refurbed (seals / pistons) stock brakes with quality pads and braided hoses are excellent. You can upgrade to a 27mm master cylinder but probably won’t really notice benefit on road. Intake - I’ve spent hours on YT / forums listening to all the views, my conclusion for 3.4 little benefit without ecu remap and only obvious on track / instant license ban speeds. However it’s likely that 4.1 with open exhaust will require higher intake flow rate above 5k (hence why on gt2/3) You need to increase intake system right through (which many overlook) from airbox, maf, 82mm throttle body, TB plenum connection, unclear from bench tests that IPD cast v Porsche plastic or cheaper alloy is worth it. The rest of intake plenum/manifold is barely different across range except GT cars for power 9k+ rpm. ECU remap 100% needed for intake mods but you’ll be doing anyhow to match 4.1.