JoeZ,Hi flow air filter and a Tanabe axle back exhaust?
10?

 

i'd like to know if adding the JoeZ and the tanabe catback actually changes the throttle response.

 

don't waste your money on an air filter, they don't have any performance advantage over stock. tanabe doesn't make a catback exhaust, but their axel back might yield 5hp at best. JoeZ's pipe might add a couple hp here and there through the powerband but nothing huge, its just a design improvement over stock.

 

ETC does that to a degree. the intake might make things seem a little snappier. you might notice a very slight difference at WOT from a stop

 

Thanks,I meant axle back so I'll edit.
So you figure about 7-8 HP.

 

eh, doubt it. maybe 5 at best, with maybe a max of 6-7 across the powerband. 8 would be pretty good, considering you aren't really changing any of the parts of the vehical that are severely restricting performance (headers, catalytic converters...)

in all honesty if you haven't bought any of this yet, i'd wait for Mazzuri's is250 headers to go on sale. best bang for your buck you're going to find

 

Just bought the Tanabe so far.
I'll have to look into the headers.

 

I can't wait for the headers to come out.

 

Anyone have an ETA on those? Never mind, just saw 2/1/08...