4g63 Rocker cover(90s) + extractors.

4GTuner

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actually the stock exhaust wasnt too bad, the insides were smooth and were 4-2-1 not bad till top end then it was just flat, but good for fuel econ...... if you want more power out of stock exhaust, from the merge collector back make the pipes 2.25 the entire way or make the secondary pipes both 2" into collector then collector to flex joint also 2" then after flex joint 2.25...... both styles will move the torque about 500-700rpm from were it is now.......

just a thought ...
 
same extractors i'v got good for stock n/a give em a call would be better then the stock stuff or what you have now!.......
 
same extractors i'v got good for stock n/a give em a call would be better then the stock stuff or what you have now!.......
 
same extractors i'v got good for stock n/a give em a call would be better then the stock stuff or what you have now!.......
 
i think the car has a exhaust as well, don't even think about the amg bar thats on it, thats already paid for, just waitin for them to take it off for me
 
i think the car has a exhaust as well, don't even think about the amg bar thats on it, thats already paid for, just waitin for them to take it off for me
 
i think the car has a exhaust as well, don't even think about the amg bar thats on it, thats already paid for, just waitin for them to take it off for me
 
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