Low dyno numbers, would like some opinions
Hi everyone I recently got my 370 uprev tuned and was quite dissapointed at the numbers(will post dyno sheet in a bit). My 370 is N/A with Stillen catback exhaust, Stillen gen3 cai, and Motordyne art pipes. With these mods I expected to definitely be over the 300 whp mark. But with the tune I ended up at 280 whp, and before the tune it was only at 264. I cant imagine why the number would be so low. Tuning was done on a dynapack dyno.
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