ordered some 65lb injectors and going to install them when i fix my LIM gasket later this week.
I know the basic formula for all this: stock inj/new inj= .xxx multiply this value in you IPW table
The only thing i'm unsure about is that this knowledge is based on 97-03 cars with a lower fuel pump pressure. . . 3 bar, Whereas, an 04+ car runs @ 4bar or 58psi. Will this change my calculations? My thinking is that if you use both injectors @3bar(or both @4bar) the ratio should be the same and it shouldn't matter as long as those rating are accurate.
so far this is what i have using stock injectors & the "65lb" injectors @ 3 bar(using ZZP injectors that are rated 60lb @ 3 bar)
33/60= .55 or 55%
Can anyone confirm this for me? or better yet are there any 04+ guys that have dealt with this already and can give me IPW #'s?
I don't want to have start up issues after i install the new injectors
Thanks!

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

I can't help you in your calculations because I've never needed to upgrade injectors. However, why 65lb/hr injectors? Are you going to be running E85?

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

^^ yes, going E85 soon if everything goes to plan!

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

Gotcha. Well I hope someone who knows about injector scaling steps in haha.

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

^ no sh*t! posted this on cgp a while ago too and no one really had much to say. So either people think it's too dumb of a question to reply or i've actually stumped everybody! lol . . i'll assume the former

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

For me it's the latter but I can only speak for myself

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Look here:

http://www.turbobuick.com/forums/e85-technical-forum/

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2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

^thanks for the link. not exactly what i'm looking for but good info

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

What you really do is adjust your IFR table to the 60/65# injectors which would be for example: 33 / 60 = 0.55. So the new IFR table shall be 55% of the old table (highlight all cells in the IFR table, right-click, select CUSTOM, click on PERCENT, enter 55, click ok, the new IFR table is now near perfectly matched). BUT since your going e85 the rule of thumb is since you need to add 30% more fuel to run e85 you will actually adjust your IFR back to about 42.5 injector IFR.

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Dave's Hocus Pocus Tuning of South Dakota

ahhhh finally someone chimes in!
This is exactly what i was going to do.
And yeah i guess 42.5 values would work seeing as 42.5/60=.70833 or an extra %30 for E85.
Now glancer, you have any idea if the different fuel pressure ratings between 97-03 cars and 04+ cars will affect this ratio at all? or am i correct in assuming if i just use both injectors at 3 bar ratings if will all factor out the same?
also,i plan on running gas for a while first before i switch. Will it be worth trying to maf tune while on gas or will it all change once i convert to Ethanol?

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

its glanzer. and i wouldnt worry about about it bc your IFR tables with be different to compensate for that. Since your working off a smaller injector (33) versus what we work off of (36) IFR table.

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Dave's Hocus Pocus Tuning of South Dakota

Gotcha,that makes sense. Worth doing a maf tune on gas before i switch to E85 or will it be fubared after the switch anyways?

-- Tue Apr 19, 2011 9:11 pm --

Gotcha,that makes sense. Worth doing a maf tune on gas before i switch to E85 or will it be fubared after the switch anyways?

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

I would just wait till you switch because im sure you will drop a pulley add some timing plus the way your fueling is going to be a little different

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Dave's Hocus Pocus Tuning of South Dakota

Awesome! thanks for the help Glanzer.
Any other tips you have for tuning on the E85?
I'm keepin my WB calibrated for gas and aiming for 10.8-11.2 WOT
How bout startup tables and timing?

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

for startup tables and timing cables 04+ tables work well since your a 04 you should be fine. for afr get it to 11.5-11.7 with 0 kr and baby jesus might cry a little.

Tips-

Dont exceed 22 * of timing after that its a waste. Drop pulley size and lower plug gap. run 104's (pretty much a little warmer plug)

other than that you should be fine.

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Dave's Hocus Pocus Tuning of South Dakota

Cool that's pretty much what i had in mind,glad i'm on the right track.
Can't wait to make the switch!

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

alright install is complete! Car started right up and runs just fine. one slight problem though . . at idle the wb is reading in the 12's when commanding 14.7 and when deccelerating AFR goes into the low 10's How can i change this?
don't think it's a good idea to tune it out with a maf tune so i'm thinking i need to tweak my IFR table in the appropriate Kpa range?

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

Shoot me your bin file i wanna look at it.

More than likely your IFR table is f*cked

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Dave's Hocus Pocus Tuning of South Dakota

sent the bin file to you e-mail
LMK,
thanks

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Comp G: 3.2-E85-65's-headers-rockers-104's-DHP tune & "other stuff that doesn't matter"

Check your email i wrote you a book and attached the bin file.

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Dave's Hocus Pocus Tuning of South Dakota