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· Registered
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41 Posts
Discussion Starter · #1 ·
i have had my 1jz for about 8 years. same stock turbos not blown, same blitz exhaust, and intake. i just recently did a tune up with new plugs and oils and also added a 3' downpipe and eliminated the cat. since i installed the downpipe, it seems like when i try to floor it the car sputters. rather it be in 1st or 5th i get the sputter. can anyone let me know what is going on?
 

· Death by Sedan
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66 Posts
Gap your plugs closer homie. Trust me. Since you opened up your exhaust, you are probably boosting more than before and its blowing out your spark. Don't take my word for it, but I think the recommended gap is around 0.26-0.28. It is also possible that you are spiking hard and hitting boost cut.
 
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