boostedeco
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- Thread starter
- #1
Hey guys you all have helped me in the past, and i think you guys will be able to answer this as well! my 2015 mustang ecoboost has just recently been tuned, it pulls harder but when i give it hard gas at 4500 rpm's it backfires out the exhaust and lacks acceleration,i think my spark plugs are the culprit? i ordered the NgK spark plugs, keep in mine i'm on the original plugs i'm pretty sure
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