Help!!! :( Pulley Sizes & Belt dont match!

cupcakez

Hmm well. I don't know. Maybe I won't hit 13psi then because I thought smaller pulleys bring in more boost? xD

I also have the full 928 SC upgrade with the HSS bearings (x2) and the 928 impeller, an idler pulley on the serpentine side to eliminate any belt slip (thing is extremely tight now).

We'll see! And I'm running on 91 octane.

redondoaveb

Maybe the 928 impeller will get you there. I don't know how it compares to the Si trim I'm running. Running 91 octane you're going to be really limited on how much boost you can run. Seb had to pull a bunch of timing on my 91 tune. I'm not making any more hp on my 91 tune with the 2.85 but I gained 45 more on e85. I'm making 114 more hp on e85 than I am on 91.

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Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
750whp/700ft.lbs

cupcakez

Oh. I totally understand that e85 brings in more HP.
I will swap to or at least, try out e85 later because I already have a gauge for it.
I just need to make sure it runs really nicely for a while on 91 octane first.

I do not know how the 928 impeller compares to the Si trim impeller you are running either. Maybe someone can shed some light on this?

I'm just worried about the car getting up and running first after it broke down on Feb 02, 2018 afternoon.

redondoaveb

Yeah, it'll be nice to get back on the road, especially with more power. I can tell you one thing about e85. My car just seems to run smoother and crisper on e85 than 91.

__________________
Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
750whp/700ft.lbs

cupcakez

Yeah it's just my tuner is very cautious around e85 since he doesn't have tons of experience with it but that's okay.
I definitely know that e85 is safer in terms of like temperature and stuff, but when it goes bad, it goes BAD lol.

That's the one thing he's concerned about, on top of it being a corrosive fuel lol and corroding parts of the car / engine if any issues come up.
And the detonation as well lol