Custom ported and CNC throttle bodies, upper and lower manifolds by Synergy Composite

DR_ · 02-25-2015, 11:20 AM

The P0300 is still a problem. It happens once every 10 times I cold start the car. I never get it except then.
I felt a modest gain when I installed my ported TB, similar to when I installed my M370 or when I installed pulleys. I suspect about a 5whp but I have no proof and I haven't done a retune.

synolimit · 02-26-2015, 12:31 AM

Quote:

Originally Posted by DR_

The P0300 is still a problem. It happens once every 10 times I cold start the car. I never get it except then.
I felt a modest gain when I installed my ported TB, similar to when I installed my M370 or when I installed pulleys. I suspect about a 5whp but I have no proof and I haven't done a retune.

hmmm, most common being air leaks and neverbonestock just PMing me saying he found one on the mani, are all the gaskets on the TB's and upper to lower ok? also was it you and I talking about plugs? how many miles on yours and check the gaps. but since youre talking cold start ups i have to side with leaks again. after that depending on miles id look into fuel pump and the sock and injector cleaning.

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02-25-2015, 11:20 AM	#1 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 18	The P0300 is still a problem. It happens once every 10 times I cold start the car. I never get it except then. I felt a modest gain when I installed my ported TB, similar to when I installed my M370 or when I installed pulleys. I suspect about a 5whp but I have no proof and I haven't done a retune.