Decision made: Going Flex
 

Hi All,
I've decided that until I go FI, I'm going to go Flex Fuel kit 91/E85. My car is mostly stock, with a few little exceptions (TRD Air Filter, ECUtek tune, full Aero) and I was wondering if anyone knows the ballpark whp gains going to E85 in a mostly stock FR-S? I'm still learning the ins and outs of this great car so any information or advice would be greatly appreciated.
Thanks in advance.

I would wait till you get a good header to maximize your gains. By good header I mean any of the following:

ACE
HKS EL
Tomei UEL
JDL UEL

And also consider adding a front pipe if you want an extra 5-10 whp.

Oh, maybe 30-40 more wheel HP, depending on the tune.

Hey, I know little about it ...... wait for someone else to chime in.....:)


humfrz

flex kit or dedicated E85 tune on an NA car will make no difference to hp,
flex fuel kit just allows you to swap back and forth or anything in between without re-flashing or map switching safer more convenient yes, more hp on an NA car no.

see basic bolt on mods guide link below

you will get about 20hp (at wheels) over stock car on stock tune on petrol, going to tuned on E85

Thanks for the information. I know what the flex aspect is. That's why I'm thinking it. E85 isn't all over the place so I want the ability to run both if needed.

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Here this might help

http://www.delicioustuning.com/Stock..._Breaks_200whp

https://www.google.ae/url?sa=i&rct=j...41365151950800

https://www.google.ae/url?sa=i&rct=j...41365209374843

You are contradicting yourself. :)

To the OP. Going to e85 tune with e85 gives you 15-25 whp. Add a good header and FP and you'll get +5-15 on top of that

He's comparing the difference between a flex kit and a tune. Not either to the stock tune.

For clarity, when I go to E85, obviously I will be retuning with an E85 map.

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Drop-in Filter, Header (UEL, or EL), tune (OFT, ECUtek, other), e85 (flex or not) can get you between 210-220 WHP. Look on the "detail" tab here (the shared spreadsheet) for results and setups from the recent Church Auto 86 dyno day.

http://www.ft86club.com/forums/showp...&postcount=105

That's cool. Thank you. There's something about these cars that make us want to do things to them lol.

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yep as per phrosty response.

propably did not word it correctly

im comparing gains from e85 dedicated and ,flex tune, gains will be same arround the 20hp mark over stock :-)

No worries @steve99, no phrosty-ness detected lol. There's so much conflicting information out there that I don't know what to believe lol.

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