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      09-20-2014, 10:05 PM   #1
SilentAttack
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Engine Hesitation driving upon start up

Upon a cold start I typically roll back out of the garage wait for 30 seconds and take off. I notice if I do light rev's when the engine is cold between 2-3k rpm I get popping noises and upon the initial drive off the car is sluggish and sometimes jerky. I recently updated to a stage 2 BPM tune and this is when I started noticing the behavior I am experiencing. Any feed back is welcome.

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      09-20-2014, 10:24 PM   #2
AlpineE92M3
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Usually any car is jerky until everything is up to normal operating temps, engine, tires etc. Especially high performance cars. I always let the engine warm up a couple minutes before I take off. My Supra I let it warm up to ten minutes sometimes. Proper engine warmup and cool down is always a good idea!
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      09-20-2014, 10:31 PM   #3
SilentAttack
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I figured it has something to do with the added performance mods because the car works like a dream once to normal operating temps. I try to never go past 3k rpm until then but I noticed it once I deleted my cats and upgraded to a stage 2 tune so had to ask, thanks
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      09-23-2014, 04:51 PM   #4
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Quote:
Originally Posted by SilentAttack View Post
I figured it has something to do with the added performance mods because the car works like a dream once to normal operating temps. I try to never go past 3k rpm until then but I noticed it once I deleted my cats and upgraded to a stage 2 tune so had to ask, thanks
exact same setup as you, bpm stg2 with primary cat delete. The car lurches cold in the morning, but once its warm all is well..
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