Which of these setups will net me more power/torque.

APR 91 chip AND a 42 draft designs downpipe

OR

APR 91 chip AND borla catback exhaust?

This is on a 180Q btw

 

chip + dp

 

Agreed...

but exhaust makes you sound faster

and there won't be a huge hp difference either way.

 

but DP is nicer to my wallet, so victory!

 

Not nicer to install though.

 

Good point...

DP is on the upper limits of DIY which means you'll probably be paying a shop $$$ to install it.

On the other hang Exhaust is a pretty simple DIY which means No install costs.

 

all you need is to cut out the old one out and you can slide in the new on on w/o much hassle. Elitte has a somewhat DIY on vortex

 

But with exhaust id still have to buy a valance so its the same in the end

 

All you need for cat-back modding.

 

On Project TT didn't each alonenet a good amount on the dyno though? I say both is a welcome increase for the whp but both togetehr are always better! Keep in mind this is on a 225 however. From the article:

Intake and catback:
"The TT was finally strapped down and a couple low speed test runs were done to make sure that everything was setup correctly. After dialing in the dyno, we began the first of three runs for the day. It should be noted that conditions were almost identical to the first time we dyno’d Project TT, with the outside air temperature being only slightly warmer. As with most dyno’s, the first run usually yields the best numbers and ours was no exception, putting down just under 205 whp at 4,750 rpms and 238 ft. lbs of torque at 3,000 rpms. This was an increase of almost 8 whp and 22 ft. lbs. of torque over our previous best runs. The next two runs netted 201 whp and 231 ft. lbs. of torque, so some heat soak was apparent after the initial run. Horsepower and torque increases began at 2,400 rpms and continued until 5,200 rpms over our baseline chipped run. Another interesting tidbit was that max power occurred at 4,750 rpms on this dyno, compared to 5,750 rpms on our first dyno."

After adding DP:
"After strapping Project TT down, a number of runs were made, producing impressive results. The best run of the day netted a 9.3 hp and 19.3 ft. lb. peak gain at the wheels. Not only did it yield these peak gains, but power was increased over the entire RPM range. Torque and horsepower was now being made much sooner in the rpm range. The car is now making about 125 ft. lbs. of torque at 1,900 rpms, as opposed to 2,400 RPMs before the downpipe install. Peak horsepower was also occurring at 5,500 RPMs, rather than 6,250 RPMs as previously recorded. Upper range power was also markedly better, with an approximate 15 wheel horsepower gain at 5800 RPMs over the previous run."