Roush05

However, I have a couple questions that I thought you guys could help me with.

1) The blower is rated to put the car at 435hp/400tq at the crank. What is the approximate drivetrain loss on that? Is it usually around 12% or is it 15%?

2) With the mods in my sig, what kind of numbers should I expect?

3) My goal for the M90 is around 430 rwhp. I realize i will need a smaller pulley. Is the 2.57" the one I'll need? Besides that, will I need anything else to reach that number? I see something about the idler pulley a lot when browsing youtube videos.


Thanks for the help!

NJ3

You'll need a 2.49 pulley, 90mm idler pulley, and a good flowing intake like JDM or JLT carries. http://jlttruecoldair.com/ZenCart/in...roducts_id=217 You will also want to get a dyno tune from a local tuner, he then could tell you if you'll need a BAP. I'm at 398rwhp without the smaller pulley and intake so 430rwhp is realistic.
Figure 15% drive train loss.

Roush05

That's pretty much everything I need to know, thanks! do you have 39lb injectors?

NJ3

I think so, they came with the M90 kit from Roush. I did need the KB BAP at 398rwhp btw.

NJ3

There is a wealth of info here too. http://www.fnsweet.com/forums/05-09-roush-mustangs/

Roush05

I'm on my phone so i'll check the link out later but thanks again! I will probably go ahead and get a BAP so I don't have to pay for another dyno tune if it turns out I do need it.