Neffster, normally I accept your posts as gospel but I must beg to differ on this one. Lets compare apples to apples here. Nismo's claim of 9-13 hp is for the headers only at a price of $1150. The power gains of 20 peak hp claimed by Crawford are for the entire Crawford package that includes high flow cats and a plenum for $2,000. I'd suspect that in a header only vs. header only comparison, they would be very closely matched in price and performance.

 

Doug claims 40rwhp at redline too for the total package. Nismo claims 9-13rwhp peak. Could peak power be occuring at redline for Nismo?

BTW, I dynoed the plenum and cats (and z-tube) and got 17rwhp at redline (peak I didn't do a comparison but maybe I can have dabomb put one together for me). Doug said I should see about 20. He also said I should see another 20 (at redline) with the headers. I'm dynoing on May 7th, so don't beg to differ too soon. I'll update this thread or make another post about the dyno day in this forum. Stay tuned...

 

Werd