which mod next?

[jeffsredt/a]

Hey every one, i have a 2001 ws6 trans am "ram air" a4 and i just put on the borla cat back. It sounds great with the larger plate in, but im not sure which way to go. If i should keep on the exhaust and add headers, high flow cats & y-pipe. The other idea i had was to put in a cold air induction kit with a 90mm throttle body. I was thinking of using either the k&n kit or the volant kit. The car is stock except for the new borla. Any feed back would be great.

Thanks for your time and enjoy the long weekend

[hammertime]

Since you are an A4, you should consider a stall converter at some point. A good converter and traction makes a huge difference. Exhaust mods like headers will help you make power as well.

And if you don't already have one, a lid is worth 5-7 hp at the wheels.

[Italiano]

stick with upgrading the exhaust... no question. Both will give you more power, but with the exhaust, people will KNOW IT!!!

[nhraformula]

for a A4 car, there is no better gain in performace than a stall converter.
i have a tci streetfighter stall which is considered small by todays standard and that stall took off almost .6 tenths at the track.
also the streetfighter drives almost like stock.

[~redlinels1~]

Get a torque converter first. Dont bother with the 90mm TB...I would just get the stock one ported.

[jeffsredt/a]

Thanks for the info everyone. I think I'm going with a header,cat,y-pipe combo. Either a MAC combo system or pacesetter headers and random tech cats, but I don't know whether to go with the pacesetter y-pipe or stick with the bolra since thats my cat back?

[nhraformula]

for headers, you need a aftermarket y pipe.

[jeffsredt/a]

as far as redlines reply, can any machine shop port out a stock tb?

[XtinKt]

IMHO the first mod for any FBod Driver is a good radar detector.