Got My Car Running. (e85 Guru's)

[rad100]

hey all,

just picked up my car from being tuned.

have put a forged 25 into it and running a gt3076r with the .60 front and .82 ext gate rear.

high mount manifold with a 38mm gate running off it.

fueled by a gtr lift pump fot surge tank to 044 external.

740cc injectors

tomei poncams, gtr valve springs.

afm is a z32 which is now located in the cooler pipe infront of the plenum

plazmaman plenum with stock TB

now i have it running on e85 and a eboost controlling 15psi flat.

i made 282rwkw.

i previously made 279rwkw on 16psi on bp98.

my question is, should i see better results than this?

i know the plazmaman and poncams wont give me more figures but better low down/mid range.

your thoughts?

[R31Nismoid]

E85 generally should see 30-40rwkw gain on most street style setups.

That's the gain I've seen across what, 30 or 40 cars now and seems about "norm".

Either way though you need more boost in there, a 3076 isn't doing much @ 16psi on a 2.5ltr. 20-22psi is when the show will start.

[paulr33]

that poor little airflow meter, such a hot hurricane it is trapped inside of being in the cooler pipes

[SimonR32]

E85 generally should see 30-40rwkw gain on most street style setups.

That's the gain I've seen across what, 30 or 40 cars now and seems about "norm".

Either way though you need more boost in there, a 3076 isn't doing much @ 16psi on a 2.5ltr. 20-22psi is when the show will start.

I concur, which doesn't normally happen with me and Nismoid...

15psi is rather homosexual for a built motor, its weak sauce even for a stock motor

[rad100]

waiting on 1000cc to arrive..

[GTScotT]

Refer to your alter-ego Simon-R32's car for appropriate E85 results if you ask me.

Who tuned it?

[(OO)Firty Free(OO)]

hey all,

just picked up my car from being tuned.

have put a forged 25 into it and running a gt3076r with the .60 front and .82 ext gate rear.

high mount manifold with a 38mm gate running off it.

fueled by a gtr lift pump fot surge tank to 044 external.

740cc injectors

tomei poncams, gtr valve springs.

afm is a z32 which is now located in the cooler pipe infront of the plenum

plazmaman plenum with stock TB

now i have it running on e85 and a eboost controlling 15psi flat.

i made 282rwkw.

i previously made 279rwkw on 16psi on bp98.

my question is, should i see better results than this?

i know the plazmaman and poncams wont give me more figures but better low down/mid range.

your thoughts?

Same Dyno? Seems about right for that turbo and boost imo

[rad100]

yep same dyno.

dont get me wrong im happy, just wanted to discuss it

[toffy]

waiting on 1000cc to arrive..

are the injectors holding it back from more boost? ( i don't know a great deal about E85 , i'm asking because i'll be building something similar)

[Harey]

are the injectors holding it back from more boost? ( i don't know a great deal about E85 , i'm asking because i'll be building something similar)

Exactly, I wouldnt think 740cc injectors would be holding you back! Joeyjoey... has 320rwkw with E85 on 555cc injectors (pretty sure anyway). What duty cycle are the injectors running at?

[rad100]

i didnt ask % but he said theres a LITTLE room to play.

i did ask for a SAFE tune, and i emphasized the SAFE...

i think afr's are 11.5 ish?

i forgot what the sheet said.

[NYTSKY]

I made close to 370rwkw with my 740s. But for 16psi it sounds about right.

[rad100]

kool, once i get this track day over, and see how the car performs ill get a retune and wind some more boost!

[R31Nismoid]

Ye i was gonna say also 740's shouldn't be maxed out @ those power figures regardless of a safe tune or not...

AFR's for E85 is not the same as AFR tuning for PULP.

11.5 is ridiculously conservative.

[Randon_I_Am]

Ye i was gonna say also 740's shouldn't be maxed out @ those power figures regardless of a safe tune or not...

AFR's for E85 is not the same as AFR tuning for PULP.

11.5 is ridiculously conservative.

So you're saying for e85 AFR's of 12 flat are quite conservative?

What's a good AFR to tune for with e85?

[R31Nismoid]

12-12.3 is what a friend of mine tunes E85 at, and by no means is that 'on edge' either.

Apparently much either side of that and it doesnt go so well anyway.

11.5 is certainly on the side of really safe - its probably even perhaps possibly why power is down, a built motor shouldnt be sitting there IMO.

[rad100]

nismoid, its not gonna hurt the engine is it? just underpower it?

[VB-]

not even that. e85 loves being rich, seen heaps of cars make more power going richer. most recent one that comes to mind was an R35 that kept gaining power as it was fattened up near 10:1 (on a lambda scale calibrated for petrol obviously). i *think* with E85, EGT's come into it more. its not balancing A:F ratio and hp, but EGT's sort of make it 3 dimensional if that makes sense?

[scotty nm35]

not even that. e85 loves being rich, seen heaps of cars make more power going richer. most recent one that comes to mind was an R35 that kept gaining power as it was fattened up near 10:1 (on a lambda scale calibrated for petrol obviously). i *think* with E85, EGT's come into it more. its not balancing A:F ratio and hp, but EGT's sort of make it 3 dimensional if that makes sense?

Mine blows the spark out at 10.5, although I am running 1.1mm gap on the plugs. No black smoke of course but a strong ethanol smell, and im sure its not good for the cat I just put in. (for some stupid reason)

Remember there's more oxygen in the fuel, so rich should still make good power.

[STATUS]

12-12.3 is what a friend of mine tunes E85 at, and by no means is that 'on edge' either.

Apparently much either side of that and it doesnt go so well anyway.

11.5 is certainly on the side of really safe - its probably even perhaps possibly why power is down, a built motor shouldnt be sitting there IMO.

True, 12+ is fine. i tune in lambda though so 0.84 on E85. We have found atm that pump e85 is a little more like e75 so we fatten it up abit we are seeing a 0.5-0.7 jump in afr or 0.05 lambda towards LEAN when refilling with e85 so be aware.