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Discussion Starter · #1 · (Edited)
Hey guys, wanted to get some input from others that may have done this...I bought an 03 cobra recently that was already converted to NA. Has '01 intake, alternator, front pulley/belt setup, etc. It has never had a tune for NA as it has stock pumps, injectors, and maf. Starts up fine and runs pretty decent(considering the lack of forced induction lol). Anyway, so it starts up, idles, and runs great overall but when if I get into the 5800rpm range it kind of seems like it misses a bit or retards the timing. I pulled all of the codes and none show a misfire, they're all for the lack of IAT2, lack of EGR, and bank 1 and 2 rich(no cats).

So has anyone run their car NA in between switching from blower to turbo? Is it acting like this from lack of tune even though it has the stock fuel and maf setup? Thanks for any input.
 

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Discussion Starter · #3 ·
Haha I hear ya on the slow part...But yeah it definitely drives fine all the time, just has a hiccup sometimes at around 6k.
 
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