You don't need that much meth too max out a stock turbo.

 

how much meth do you need to max the stock turbo out - on stock injectors?

30psig peak boost, 12.5AFR...timing as near MBT w/o any knock?

 

please post when the engine

 

I'd also like to know this also. I'm about to be tuned around 28PSI on 70% meth with dual 600cc nozzles. At this point the stock turbo is maxing or at least very close to maxing it's potential right?

 

^^ please post when the engine laughs????

I'm sure it starts to giggle every time it gets mouth full of the good stuff

 

 

I just wanted to be graced by your almighty presence... and to say you worked on my car. I'll pm you later though If i dont figure it out.

 

Abner, whats a "fixed orifice"?

 

huh?

 

I think he means a restrictor.

 

i put it this way with me a 1150 cc nozzle (100%), stock fuel pump, 30 psi spike, 25* of timing, 12.0-11.7 afr, no knock

my high throttle fuel % looked like my normal driving fuel % that how much fuel I was pulling out.

so I would have to say probably half that nozzle size with stock fuel pump could max out the stocker, i dont think timing could be that high though.

if you want I can post up a log I have when I had the stock 16g but my afr's are not datalogged

 

The stock turbo can only hold 21-22psi to redline anyway. Why spike so high only for it to taper off very rapidly as the rpms go toward redline?

Yea, I had 22* of timing (at redline) on my Meth tune on 91pump @ 25psi.

-M

 

There are a couple methods to keep boost up with the stocker. I have held 23 psi at 7200 in the past by varying the duty cycle on my GM BCS. Although since I have started to get into W/I my boost has come down at high rpms. I believe that this is due to the colder exhaust gases. My EGTs now with W/I are almost 100 degrees colder. You may have to keep the EGTs up higher to maintain higher exhaust gas velocities to hold more boost. Just a thought I am throwing out there. I am really new to the W/I game.

 

High spike more tq but I hold about 25ish (3rd gear pull) to redline (my shift point 72-7300) with my wga. gear changin I get about 26-27 average boost and 4th is the only gear I get 30 and it sits there finally tapering to 27ish.

 

Impossible unless you have something no other stock turbo has. Do you have an upgraded wga or something? My car only holds about 21-22psi to redline (7200 rpms) on bone stock turbo.

-M