i have a 2.9 intense pulley with a stage 2 belt. 42s for injectors. would a drop to a 2.8 pulley make any diffrence. i plan on getting the car retuned very shortly. and also does the snout need any machining for a 2.8 pulley?

 

snout does not need machining and pending on where u live or whatever ide get 60# injectors... im running a 2.9 and i run very high injector duty cycles... like maxed out... now you could get a better tune then me but either way your in teh grey area in my opinion... and yes a 2.8 would make a difference in boost... you will get to boost hihger and much faster... 2.8 ide def get 60#...

 

u need #60 injectors to run a 2.8 or u have to run meth but i'd suggest just getting the injectors....you'll notice a pretty good difference between the two pulleys an you don't need to machine the snout till a 2.6 i believe

 

listen to ^^^ your 42s are pretty much maxed out on the stage 2 tune

 

its a stage 3 tune currently. well ecu tune. if i drop to 60s and go 2.8 hows thats going to be dependibility wise.

 

its fine i'm running a 2.8 and 60's since last spring and cars running fine and SCREAMS and with the 2.8 you'll be at the limit of the efficientcy for your M62

 

yeah buy some 60's and then drop it down to a 2.8 and you'll be fine after a tune ofcourse.

and you dont have to snout match untill 2.5 just and fyi for ya.

 

dam was close couldn't remember if it was a 2.5 or 2.6 cuz my buddies 2.7 is close as ****

 

I'm fine and happy with my 2.85" and 42#s

The dyno showed a steady Air fuel mixture a little on the rich side. So obviously my injectors arn't maxed out yet, as it holds that up to 6, 500 RPM ( didn't go past that on the dyno test )

Looks like you got really close to the setup I have. Exept my CAI is K&N and my Pully is 2.85" What kinda power you putting out? I was dynoed at 230whp.

 

242whp

 

I have a stock pulley on right now. I wanna get a 3.0" how much do i need to do i need to get the pulley and a hub without a belt? or i need the stage two belt?

 

i think u should also start thinkin about cooling mods. very important too