Flex Fuel Kit (E85) Install Guide - 16-24 Camaro LT1, SS & ZL1 | Lethal Garage

Looking to install the Lethal Garage Flex Fuel kit? This guide will walk you through everything minus tuning for this install. Also checkout the dyno results!
This flex fuel kit will allow you to run 91/93 or E85. You can mix the fuels or run each as a stand-alone. But you will want as pure of an E85 mix as possible for max power gains.
Note: This kit requires a tune to be able to run E85, do not run E85 without having your car tuned for it.
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[@Lethalgarage]

The Lethal Garage Flex Fuel kit is now available! Lethal Garage Flex Fuel Kit: bit.ly/2ObtEjW Red Barn Racing - instagram.com/redbarnracing

[@byoung4367]

Is this compatible with older cars. Like can you use on the Terminator x

[@machinis]

Hey Matt. I've been running your kit for 4 years on my daily driven, always running E85. No issues at 99,000 miles.

[@Lethalgarage]

Awesome! It’s always good to run a tank of regular gas from time to time regardless.

[@rothwell5150]

Bought this kit and received it in Canada within a week. Super easy install. Great guy to deal with

[@Lethalgarage]

Sometimes you never know how long it will take to cross the border, but I’m glad it got there quickly

[@shootpse88]

Excellent vid Matt,i like the simple explanation of everything,i wish more car guys would make vids like this for us

[@Lethalgarage]

Most won’t as they feel it would cause a loss in business. I get where they are coming from, but my entire channel is about doing it yourself. That is, unless I don’t know how, than I try to share and learn.

[@1971Scamp]

Just ordered mine, thanks for the info and walkthrough!

[@Lethalgarage]

Shipping today

[@jeffclayton9968]

Excellent job fellas.

[@pali1H]

Thanks man! I gotta order one.

[@youalreadyknow5039]

Red Barn is all about quality. Nice choice Matt. I am sold. Gonna hit u up for a kit. Thanks for sharing brotha!!

[@s2srt472]

Ordered mine. I thought they were gone foreva. I was looking for this last month.

[@cb_baygoat]

I got my kit from you thanks bro 😎

[@ZaZilla448]

How much did you pay for a tune bro

[@cb_baygoat]

Every tuner is different and charges different anywhere from 500-1000$

[@newtwitchclipper]

hey lethal the camaro starter heat soak issue class action suit has been dropped please do a follow up video!

[@pali1H]

Just FYI those fuel line clips on top of the intake cover are very sensitive to side load and want to break. Be sure there isn't too much pressure on them.

[@Lethalgarage]

The lines are pretty flexible

[@pali1H]

@@Lethalgarage nice! Thanks! Don't ask how I know those clips are delicate.

[@Lethalgarage]

@@pali1H the new braided line we’re using should be problem free for many years, GM’s line will get stiff and hard over time with the braided wrap.

[@chippybmw]

Thanks for the Vid. Since the fuel line clips are so important (safety reasons) can we purchase or maybe update the kit again for extra $ to include 2 more to put on the sensor connection? Fuel line coming off would be really bad news!

[@Lethalgarage]

The sensor doesn’t have room for the clips.

[@crazyrampag]

How do you pull out the connector?

[@cptnkev2801]

Any issue with the fuel pump life running E85 long term? Some plastics aren’t designed to work with E85.

[@Lethalgarage]

No issues we've seen to date. all GM fuel pumps are rated for e85, it is part of their design spec and has been since 2009.

[@Laidoffsick]

What do you use in your personal car to monitor the E content? I really dont want to run any gauges inside the car. I would rather bluetooth it with FlexLink or Fuel It apps to my phone. Just curious what you run.

[@Lethalgarage]

I use my gauges.

[@Laidoffsick]

@@Lethalgarage what gauges do you have in your car? Specifics?

[@user-fm7fi4op2z]

Ordering my kit soon! Just got a quick question how will I know what percentage of fuel am I gonna be running

[@Lethalgarage]

You would need a manual test kit or buy a gauge that can read ethanol content.

[@mob4336]

Lethal i gotta question- I had to get new tires on my SS so I went to the dealership cause they were willing to do price match. Anyways I got new tires put on and my car but it doesn’t feel the same. It doesn’t drive the same I feel literally every bump , some make my whole car shake , road noise , and corners don’t feel safe like it did before ( just to name a few ) what do you think the problem is?

[@Lethalgarage]

Same stock tires?

[@boyesjeffrey]

So what's the process of a 'tune'? What actually happens? What is adjusted? Do you have a video already?

[@Lethalgarage]

We do not show tunes or the process. You should work with a professional and have them go over those details with you.

[@lucianp7649]

where did you learn to do all of this to cars? I personally love cars but i’m having a hard time learning them to the extent that i’d like. do you have any recommendations on information or processes i could take to learn more? i currently have a 2018 camaro 2ss and i would love to build it into something really nice but i’m just scared i’m going to do something wrong and cause damage.

[@Lethalgarage]

I got lucky and became friends with people who knew a lot and was able to learn from them. It took me a long time to get comfortable doing things, but finally have taken on projects I would have steered away from in recent years.

[@kebirbro6638]

the only thing i need to run e85 is basically this flex fuel sensor and a tune right? no need to upgrade fuel injectors/etc?

[@lostinawareness7979]

I'm pretty sure you need bigger injectors to run full E85 but I think this kit is for like E50 (93/E85 mix)

[@user-xn4vt8xn6t]

I got a question, can u switch from e85 and regular pump gas or is permanently e85 once u tune it?

[@Lethalgarage]

Yes, that is what flex fuel is. If you did a e85 only tune, that would be a different story.

[@ryanregner8513]

Hey so I just got my 2016 camaro ss from the shop and I got the flex fuel kit do I have to upgrade my injectors cause they didn’t do that when they installed it

[@Lethalgarage]

Your stock fuel system can support 600rwhp. So unless you have some other major mods, you should be good.

[@thatrealcarguy]

Did he say torque is 89ftlbs on the valve cover bolt? I am about to install this weekend.

[@Lethalgarage]

Inch lbs

[@thatrealcarguy]

@Lethalgarage thank you!! Sounded way too high for a valve cover bolt.

[@tomvandyke957]

Hey so I have a question then can you run an e85 kit without a tune? I live in California and I don't know if I can tune it and be smog legal.

[@Lethalgarage]

Have to get a tune

[@HatedSS]

I had to force my white wire in for some reason it didn’t go in easy and everything is hooked up my car doesn’t have a CEL is it supposed to come on some people say yes some say no just wanna make sure it’s actually getting power before I go get it tuned in the next couple weeks thanks

[@Lethalgarage]

If it didn’t slide in easy, the ECU opening might not be all the way clear. A CEL isn’t guaranteed right away. It can turn on, but doesn’t always turn on.

[@HatedSS]

@@Lethalgarage I was able to put a punch all the way through the harness so I know it wasn’t clogged and when I did get the pin in I made sure it was straight and it clicked in the blue shield went on no problem I guess I’ll wait and find out when I go get it tuned

[@rickcorrea891]

What does this do for your ZL1 as far as performance?

[@Lethalgarage]

Not sure why YT doesn't show me new messages and comments, but it adds power, and for a ZL1 you will need more than just a kit. The ZL1 will need additional fueling support to run 100% E85, but you can gain upwards of 100rwhp.

[@splerg31]

So the only difference in the updated kit is the steel braided line? I still have the old kit brand new in the bag. Should I swap it for the updated one?

[@Lethalgarage]

Only the fuel line. No need to swap

[@splerg31]

@@Lethalgarage Cool thanks. Gonna go ahead and install it then.

[@dandre2valid]

Can you run only e-85 or can you run all the other fuels like 93 with the kit still installed??

[@Lethalgarage]

Flex Fuel allows you to run either fuels or a mixture of them.

[@saulochoa3562]

How much does your tuner charge for the E85 tune I’m an hour away From Temecula.

[@Lethalgarage]

I think $750 for a dyno tune on a 2016.

[@crisluciano9222]

what about for a 2022 1SS?

[@Lethalgarage]

@@crisluciano9222 have to give him a call

[@Tarez205]

lol after all the e85 I’ve put on in my life I’m 90 percent certain you were supposed to remove that old line entirely

[@nonstopfeeds7169]

How much does it cost for someone to do this for you? I know the kit is like 250

[@Lethalgarage]

Depends on the shop. $50-$100

[@lilchico4535]

If I buy this kit and tune will it avoid my warranty?

[@Lethalgarage]

Any flex fuel kit will void GM’s warranty

[@julesblancfer6060]

Hello, Can the kit work on a 2018 LT 2.0 Turbo? Is re-programming mandatory? Thank's

[@Lethalgarage]

Unfortunately, no

[@julesblancfer6060]

@@Lethalgarage So it is not possible to drive with E85 with a 2.0 turbo?

[@Lethalgarage]

@@julesblancfer6060 it’s not possible to have flex fuel. You can go to any tuner who is willing to work on a 2.0 and have them straight tune it for e85, but you can’t set it up with a sensor and run pump or e85.

[@julesblancfer6060]

Thank you for your answer, the mapping parameters are the same for the 4, 6 or 8 cylinders, or are they specific to each car?

[@Lethalgarage]

@@julesblancfer6060 the ECU and each of the cars is different. The V6 and i4 do not have provisions to read an ethanol sensor.

[@jayofu3go392]

When will you restock the kit it’s sold out on the website ?

[@Lethalgarage]

Should have restock on Monday

[@jayofu3go392]

@@Lethalgarage fasho appreciate you my guy

[@mandohernandez5929]

Do you have a kit for 23 Silverado 6.2?

[@Lethalgarage]

We do not. Only DSX offers that to my knowledge thanks to the tuning required.

[@disalvo00]

What do i do if i installed this kit and the check engine light comes on

[@Lethalgarage]

If it’s not tuned than a CEL will turn on. The ECU sees the pin and doesn’t know what to do with it. But I would verify it’s not an Evap code which would indicate the connection is hooked up tight/properly.

[@jacobchapel6823]

Do i have to upgrade fuel injectors, or fuel pump 2020 Camaro ss ?

[@Lethalgarage]

Your stock fuel pump and injectors will get you to 600hp, anything above that, yes, changes will be required.

[@jacobchapel6823]

@@Lethalgarage my buddy has a 2015 corvette stingray he wants to know if he would be able to use stock fuel pump and injectors as well ?

[@Lethalgarage]

@@jacobchapel6823 yea, the C7 is the same setup. His system will support upward of 600hp at the crank

[@ryanratliff9115]

Question if I were to order this tonight and wanted it delivered by Friday would that be possible?

[@Lethalgarage]

If you pay for Express shipping USPS priority express is a 1-2 day service. Depending where you’re at in the country it’s pretty much next day service. We would ship it first thing in the morning.

[@ryanratliff9115]

@@Lethalgarage ok how do I go about doing that? I already have a kit but I like the clean install on yours. Also what’s up with the ground wire? Mine doesn’t have that

[@Lethalgarage]

@@ryanratliff9115 my kit utilizes the EVAP for power while yours most likely plugs into the coil pack. So my kit needs the ground while your current one has a closed line with an inline fuse. You can order my kit via LethalGarage.com and select the 1-2 day shipping service.

[@ryanratliff9115]

@@Lethalgarage so my tuner shouldn’t have any issues? The kit I currently have is the smg and my tuner is pray performance.

[@ryanratliff9115]

@@Lethalgarage hey man I’m trying to check out with shop pay but the thing just keeps spinning

[@wilfredoramos9236]

No one has asked why that car baseline dynoed so low? Ive never seen a stock lt1 car that low on power , not even an auto. Am i missing something?

[@Lethalgarage]

You do realize you have 455hp/trq at the crank and not wheels. Every dyno reads different. I’ve seen some dyno in the 340-360 range. Maybe go look for more dyno results. Same dyno my car racked up 1,100+ trq. /shrug

[@T3KCO]

If I get the kit can I still run it on 91 until I get it tuned

[@Lethalgarage]

Of course!

[@scottcorliss9203]

I’m gettin a 23 ZL1 w a supercharger will this kit work?

[@Lethalgarage]

A ZL1 needs fueling upgrades and possible cam to run 100% e85.

[@scottcorliss9203]

@@Lethalgarage how much more wheel HP would I be looking at w a cam and e-85 on the wheels

[@Lethalgarage]

@@scottcorliss9203 if you update the fuel system and get the right cam, you could be looking at 100-125rwhp especially if you update the lower pulley as well.

[@thomasdickson7200]

My car is still under warranty. Will it void it?

[@Lethalgarage]

Any tune will void your warranty

[@gabriel._.8478]

Is the LT1 the same as the 1LT??

[@Lethalgarage]

No.

[@obanana-2252]

Does anyone know how much the tune is?

[@Lethalgarage]

Depends on the shop. Ranges from $650-$1200 depending what year your vehicle is and if the do a dyno tune or not.

[@LT1Key]

Is a tune required?

[@Lethalgarage]

It sure is.

[@jayofu3go392]

Can you pass smog with the tune ?

[@Lethalgarage]

Depends on what state you are in.

[@jayofu3go392]

@@Lethalgarage weak ass Cali lol 😂

[@Kocharhamad]

What about ethanol level gauge

[@Lethalgarage]

The Banks iDash is great

[@Kocharhamad]

@@Lethalgarage i ordered flex fuel kit for camaro , it’s reading ethanol level? Just needed gauge ?

[@lovellwilliams9062]

Once getting tuned to 85. Can I still run 93 sometimes, or will it be strictly E85 all the time?

[@Lethalgarage]

That is what flex fuel is… the ability to run either or, or a mix of the two.

[@VibewithAycee]

My ground wire is ripping anything I can do?

[@Lethalgarage]

Cut the wire and put a new end on it?

[@xsixinfantryx]

Doesn't really matter what the fuel line that comes with it is rated for right? Aren't you going to be still be limited to what the factory line that your still using on the other half of it is rated for? Or is my wife right when she tells me I'm retarded, and I'm missing something.

[@Lethalgarage]

@@xsixinfantryx as long as it is PTFE rated and can handle E85, that is all that matters. The line that matters is after the high side pump.

[@xsixinfantryx]

@@Lethalgarage are those bypass kits any good? Where you put the sensor in it, it'll sample of the fuel, while the rest of the fuel runs past it, unrestricted? Or is that only useful if your using a higher pressure system.

[@Lethalgarage]

@@xsixinfantryx why would you want anything other than just a sensor reading the ethanol content

[@ivans6.2ss20]

Whats his ig or address so i can go buy one and get my 2019 2ss tune. I have a borla type S Axleback exhaust and GM performance cold air intake. And thanks for the video dude. Keep up the great work 👍

[@Lethalgarage]

@redbarnracing