Quote:
Originally Posted by that_guy
That's just stunning. 
I'd love to hear it with some basic cat back systems....ok, honestly I'd love to just hear it with my setup, but I don't think many people here run a Greddy SP with a catless front pipe  |
Actually... A local with an innovate supercharger has a greddy SP muffler, stock rear pipe, stock front & overpipe, but is installing the EL header this weekend... It should give you 'some' idea of what it sounds like.
I'll tell you right now the car in the video above it sounds pretty close to stock just amplified in volume slightly.
Quote:
Originally Posted by Gords_zenith
4) will using the EL catted header require a tune?
Thanks
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Time will tell on this one. I however did do a 100% OEM pull on the dyno with the car in the video above. I hard set the IAM to 1.0 and the cam profiles to the higher powered baseline (not all people do this for baseline dynos so they semi "cheat"). I did this so I can find out if the car will provide any HP gain without any tune at all. A header wont skew your AFR trims in the manner that swapping your intake in does. Do it wont happen like an injen intake where the first dyno pull you make 10WHP and then every dyno pull after you slowly make less as the car "auto tunes" back to its normal condition. The goal is to also get the catted one on the dyno as well and hopefully do the exact same dyno.
And as for CEL etc. To be honest I forgot to adjust colton's tune before he left to install the header. I did not disable the DTC for the rear o2 or anything and I met up with him late last night to verify the car was running okay (log wise) and make an adjustment to AF trim's based off rear o2 just incase it was going to throw a DTC. Though it may take a longer period of time before the DTC comes up. I would however strongly recommend having a tune and setting the rear o2 AF trims off as I have not tested how much it can skew a tune. But if the non catted didn't throw a DTC after a days worth of driving I am willing to bet the catted likely wont throw a DTC. But as stated before, time will tell!