Getting More Power Out Of -7's

[STATUS]

That first one (if it was usmair or whatever), didn't come close to the MPH to back it up, in fact the MPH showed it has zero gain, where the "dyno" said there was 40rwkw...

I'd like to see Trent's result hit the strip and pump out a MPH.

As with a few other people on here actually... It seems some have pretty "hefty" increases that seem to defy what everyone else are getting.

(not having a go at anyone here either, just wanna see more info).

tbh i retune around 3 e85 cars a week from other shops (please understand i dont mean all just some) and tbh some tuners still dont understand E85, we generally get a gain every time. we dont do drag cars (i have 0 intrest in drag) but EVERYTIME the owner will better their PB at any given circuit track.

70-80% of our tuning is now e85 so we live and breath it daily, some cars dont get the benefits but many do, the cars that do are the ones limited on 98 by a fundamental element not turbo sizing and -7's fall smack bang in this category. S15 are another good example 220rwkw on the std turbo up from 195rwkw is a common result.... normally restricted by a so called too small a turbo.... 11% increase on such a small output is super impressive.

Generally a GTR making 310-315 will always make 340-350 on e85 with no increase in boost if tuned correctly (providing there are no intake or exhaust bottlenecks). The basic rule of this extra power is the same rules that gain power on 98.

i know we are getting legit results just by the numbers in the mapping, anyone who understands the fuel will know what im referring too.

Ash im happy to show you in person where these other tunes are falling short. i have all the saved maps from the cars im referring too.

Also if anyone is not getting the results they should im more than happy to view their ecu file and give feedback on why they havent got the results.

[Buraz]

what setup and ecu?

Runs a power fc, -5's, built engine, full exhaust, fuel system etc. All supporting mods really, I can't think of anything major its missing. This was on a dyno dynamics. To be honest it feels way more than 12kw increase, it's a beast now I'm happy with it (except from blowing the gearbox last night) I just find some other results are much higher.

[STATUS]

Runs a power fc, -5's, built engine, full exhaust, fuel system etc. All supporting mods really, I can't think of anything major its missing. This was on a dyno dynamics. To be honest it feels way more than 12kw increase, it's a beast now I'm happy with it (except from blowing the gearbox last night) I just find some other results are much higher.

what comp? and where are the cam gears set to? also what a/f boost and ignition timing does it hold at target boost? -5 tend to still make power up at 26-28psi

[usmair]

Just an update on mine... -9s on e85

when I took it to the strip and ran 11.7 it had a pretty big boost leak

this was confirmed when I took it Unigroup's dyno day and I make 315kw (on a hot day). Yavuz said on a cool day it would make around 330kw. He also confirmed that there was definitely a boost leak somewhere.

I put on hard pipe kit on (did it myself) but there is still a leak. I took it to PowerTune on saturday to see if it made a difference.

We did 3 power runs... all three made 332-335kw (this was the same dyno that gave me the 370kw reading). so i think the unigroup vs powertune numbers are comparable.

There is a big screech and a boost leak. the dyno shows boost dropping from 24 to 22psi.

I've left the car with PowerTune and they will fix the leak hopefully this week.

Then its back to WSID!!

[Hadouken]

I agree with your comment of 310kw to 340kw. But 310 to a increase of 370 is huge for a same boost application

[STATUS]

I agree with your comment of 310kw to 340kw. But 310 to a increase of 370 is huge for a same boost application

Its not the same its running more boost 18psi on pump 98 vs 22psi on e85.

i also stated anything over 22psi netted no more peak power.

[Hadouken]

Oh! I must have misread

[Buraz]

what comp? and where are the cam gears set to? also what a/f boost and ignition timing does it hold at target boost? -5 tend to still make power up at 26-28psi

I don't know any of the above atm, didn't really pay too much attention to it or look into it. What do you think it should be making with what iv got? Dyno figure is one thing but it goes so much better on the road for only a 12kw increase, I don't know

[STATUS]

I don't know any of the above atm, didn't really pay too much attention to it or look into it. What do you think it should be making with what iv got? Dyno figure is one thing but it goes so much better on the road for only a 12kw increase, I don't know

if your happy then dont stress just drive it.

[Buraz]

if your happy then dont stress just drive it.

Yeh true! Not happy atm with gearbox tho

[STATUS]

Yeh true! Not happy atm with gearbox tho

least they are cheap, quick searching will net you one for around 350.

[JimmyRickard]

How reliable is United's E85? Is it a bad idea to base a tune on just their fuel?

And just to be clear, is 370rwkw achievable with my setup?

[Mick_o]

Any E85 is reliable mate tune your car to the fuel you use. I tuned my car with the caltex E85 & my car has never missed a beat! Dunno if this is true or not but I think caltex has more servos selling this stuff so id be more inclined to tune on that stuff as its more readily available.

As for 370kw on -7's id say not likely at all I would think even -9's on E85 would struggle to hit 370kw

[JimmyRickard]

Any E85 is reliable mate tune your car to the fuel you use. I tuned my car with the caltex E85 & my car has never missed a beat! Dunno if this is true or not but I think caltex has more servos selling this stuff so id be more inclined to tune on that stuff as its more readily available.

As for 370kw on -7's id say not likely at all I would think even -9's on E85 would struggle to hit 370kw

How do you tune for Caltex eflex? Is it an E70 & E85 tune?

As for 370kw, Status posted up a dynograph and mentioned a few cars were achieving it unless I misread it :S

[Mick_o]

Just tune for E70 as that's generally what it is all year round but that's something for your tuner to sort out. Well I stand to be corrected if there is 370kw -7 setups out there lol

[Super Drager]

Amazing power gain from just the E85 change and a relatively small boost increase.

[Hadouken]

Not all are that amazing! Besides, i hope you guys will be running ethanol sensors. Rather tune on a link (or similar) and fill up as you go without worrying about the ethanol content

[Super Drager]

Not all are that amazing! Besides, i hope you guys will be running ethanol sensors. Rather tune on a link (or similar) and fill up as you go without worrying about the ethanol content

Your sig is even better, picked up 9mph going to Eflex? Solid effort mate.

[JimmyRickard]

Not all are that amazing! Besides, i hope you guys will be running ethanol sensors. Rather tune on a link (or similar) and fill up as you go without worrying about the ethanol content

Link? I have a ViPEC if you are referring to the ECU. And why would I need an ethanol sensor if I only plan on running e85?

[Hadouken]

Because it wont just be 85% ethanol. It will more than likely range from 70-85 just like what the sign on the bowser.

Oh and vipec and link are the same