09-19-2008, 03:35 PM
Join Date: May 2008
Total Cats: 0
Begi S3 + weird knock sensor.
Friend of mine bought a Begi S3 kit and a MSPNP.
I just tested my car against his and at 5/6 psi, they're pretty much the same.
He may have an extra 10hp, no more, but he does have a bigger turbo, and a complete turbo exhaust line, where I have a freeflow cat and aspirated exhaust line catback.
Oh yeah, and mine's a 1.6 90hp and he has a 1.8 130hp.
I think the car needs a lot of tunning, and honestly I was expecting his car to beat the **** out of me in any gear!
One of the things I noticed, and I dont have a picture, is the "Knock Sensor" he's using... let me try to explain.
On the admission manifold, where you have the accel cable, there's a aluminium pipe, with very small diameter bolted to it. This tube, makes its way inside the cockpit, where you can hear the engine sound. He claims this can detect knock, as it actually allows to hear some of the engine bay sound.
My understanding of a knock sensor, is that it needs to be mounted in the lower part of the block, (where mine is) and this is the piston level, where the sounds of detonation are more likely to be picked up. I dont understand how a metal tube attached to the intake manifold would catch it. It would have to be severe knock no? Anyone saw anything like this before?
Another thing, he's the oil temp gauge, showing temps of 80C/175F max.
He does have an oil cooler, but I thought and read the optimal working temps are 90 to 100C?