One of our local customers dropped his G37C off to install some Stillen Headers and High Flow Cats (customer provided them). He already had the Stillen CAI and Stillen exhaust on the car prior to its arrival.

We did before and before dyno testing, and I just wanted to share the results. No tuning was performed at all....just straight dyno pulls. There are many ways to do these types of comparisons, to make the gains look bigger, but we don't do that. We run the car at baseline until it stops making power. This becomes our "before" number. Then we repeat the process of our "After" runs. Since power can vary from run to run, we always choose the best "before" run, and the best "after" run,

The end result was a 17whp improvement, and power and trq improvment across the board.

 

Sweet! Thanx for info!

I like the torque between 2250-4500 RPMS Plus less drop off in HP near redline.

Plus A/F looks a little rich in mid to upper RPM's. Imagion tuning A/F and timing!!!

Do you know what the stock dyno was?

 

Interestinggggggg... how many hours did the install take for the headers?

 

oh and how loud was it?

 

Thanks Sharif!

 

how much does the installation for the headers cost? an arm and a leg. ehh. i would love to hear the car with the exhaust, cai, hfc, and headers.

 

I think most shops charge 60-80 dollars an hour. So the question would be how long would it take to install them.

 

yea the price of installation would be good to know... decent gains

 

thanks Sharif...are thesecorrected numbers or are they straight off the heart breaker??? thanks for taking your time out to help us

 

looks like straight off the heart breaker...

 

nice..seeing how stillen's exhaust frees up at least 7whp with the 17whp header and HFC combo i think we can see at least an additional 10whp with a reflash looking at those afrs...i can't wait for cams...cvt<---thinking about breaking his promise to NOT mod his G37...

 

lol ^ BREAK IT

 

that's right...we never add any sugary fluff to our numbers. Just STD atmospheric correction.

 

Its a 7-8 hour job...basically a whole day.

 

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