I had a stock GN for years. My muffler system rotted so I decided to go with 2 1/2" SS cat back. While I was added I replaced my stock Dm with a 3.5" DP and installed a cutout pipe. While I was at it I replaced the stock chip with a TT chip. I now can only use 93 octane, not that I used regular gas before. To top it of I installed a 4" to 3" cold air system to the turbo.
I had a chance to open her up on a long stretch of straight solitary road a few days ago. It leaped from 60MPH to 95MPH in seconds. Then it started to "flutter". I cant discribe it any other way.
It was still pulling hard, lots of power but I took my foot off of it and went back down to 60. Thought about it and tried again and the same thing happened. Any ideas as to cause?
The plugs are new, the wires are new or low milage, so is the coil, regulator, fuel filter, air filter (that is huge). BTW, glanced at the stock "boost guage" at 95MPH (I installed a new speedometer reading up to 145MPH) and it was redlined, way over 15lbs of boost. I'm not counting on this information cause I cant imagine that much boost from a stock turbo in a pampered, all its life, car.
Thanks
I had a chance to open her up on a long stretch of straight solitary road a few days ago. It leaped from 60MPH to 95MPH in seconds. Then it started to "flutter". I cant discribe it any other way.
It was still pulling hard, lots of power but I took my foot off of it and went back down to 60. Thought about it and tried again and the same thing happened. Any ideas as to cause?
The plugs are new, the wires are new or low milage, so is the coil, regulator, fuel filter, air filter (that is huge). BTW, glanced at the stock "boost guage" at 95MPH (I installed a new speedometer reading up to 145MPH) and it was redlined, way over 15lbs of boost. I'm not counting on this information cause I cant imagine that much boost from a stock turbo in a pampered, all its life, car.
Thanks