95turbo gxe

iTrader: (25)

Ok well you all know I dyno at 239whp at 10psi with a A/f of 11.9. Witch sucked. Ok went to the track and had one gallon of 93 and 3 gallons of 116 and the knock levels did not change any. They still hit 230's. Witch is pulling the timing back.=killing power. My down pipe is on one side of the block and the knock senor is on the other side. (both on fire wall side). What can I check or do to get these levels down. to keep the timming from retarding so far?

Oh by the way My best pass was a 13.9 /102.9mph. with a 60 ft of 2.4

Brad92SE

iTrader: (9)

Good times! You would probably be able to hit mid 13's if you got a better launch. As for the knock sensor, I'm not sure how the VG's work, but I was having the same problems as you. I ended up just disconnecting the sensor for right now, I have never heard/noticed my engine knocking at all, so I assume the sensor was either going bad by coincidence after the turbo install, or it was getting a bad signal.

95turbo gxe

iTrader: (25)

any other ideas

cardana24

iTrader: (81)

I do not know what your problem is but I find it odd that you are having knock issues with an 11.9:1 tune and running race fuel

subs1000w

im with ya on that 100%. i dont think he would have any knock issues with 93oct and 11.9 A/F

im thiking faulty knock sensor

Brad92SE

iTrader: (9)

Out of curiosity, have you tried a lower A/F ratio? 11.9 seems a little high for a turbo.

95turbo gxe

iTrader: (25)

Im thinking the same thing.
Im thinking Im going to try to check it out.
I wonder how much is a new knock sensor. How is a good way to check and see if it is bad?

cardana24

iTrader: (81)

you ecu should throw a code for it. I know on my VG (87) I do not think I have a knock sensor....do the 3rd gen vgs(I guess you do if you are getting a knock reading)?

95turbo gxe

iTrader: (25)

No It not throwing the knock code. we do have one though. Umm Im not sure if it is from heat soak some how too. becasue I can drive it hard when it is cold and I only get like maybe readings in the 50 to 100 max. Then get it warmed up and get into it bam 230 to 238 was the highest.

mtcookson

iTrader: (2)

the next time you go to the dyno i'd unhook the knock sensor's wire and see if you gain any power back. hopefully you will gain some.

Brad92SE

iTrader: (9)

Would you need to put a resistor in place of it? I use a 470K ohm resistor, I'm not sure though if the VG KS is the same as the VE one.