Nissan 370Z Forum - View Single Post - Stillen Headers installed

t-ray · 04-23-2009, 10:46 AM

Semtex, these results do not surprise me in the least. They are very similar to my own experiences.

My revup had the oil consumption issue, and was replaced under warranty. While the engine was out, I bought some headers, and the dealer agreed to put them on for me while the engine was out of the car - for free. After breaking in the new motor, I was surprised that I didn't notice any gain(seat of the pants).

I then dynod, and even with the headers, the new motor was making ~10hp/10tq less throughout the whole rpm range versus my old motor. It took the utec and a tune to regain the lost power.

I don't know if it was just a difference in motors, or the addition of the headers, but the headers definitely hurt the driving experience of the car. I don't care for the sound(and I have test pipes). I lost quite a bit of low-end torque, and that combined with my lightweight flyweel, really took the balls out of the car. I'm just glad I didn't spend any time or money on the installation.

04-23-2009, 10:46 AM	#58 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 16	Semtex, these results do not surprise me in the least. They are very similar to my own experiences. My revup had the oil consumption issue, and was replaced under warranty. While the engine was out, I bought some headers, and the dealer agreed to put them on for me while the engine was out of the car - for free. After breaking in the new motor, I was surprised that I didn't notice any gain(seat of the pants). I then dynod, and even with the headers, the new motor was making ~10hp/10tq less throughout the whole rpm range versus my old motor. It took the utec and a tune to regain the lost power. I don't know if it was just a difference in motors, or the addition of the headers, but the headers definitely hurt the driving experience of the car. I don't care for the sound(and I have test pipes). I lost quite a bit of low-end torque, and that combined with my lightweight flyweel, really took the balls out of the car. I'm just glad I didn't spend any time or money on the installation.