Here's a following email sent to J&S.

"Hello,

I have a 91 integra LS, Custom turbo kit, Zdyne ECU, 440 injectors,
J&S classic safeguard. I love your product but I have one quick question if I may.

I am using the J&S supplied knock sensor, the sensitivity is set at 10'oclock.
I have tuned my air/fuel on the dyno 12:1, but everytime I hit 6500rpm it pulls
timing back 20 degrees? My rev limit is set to 7200rpm

I have tried eliminating all the possiblities, I have pulled timing on my timing
map. My timing at 6300rpm to 7400rpm is 18 degrees @ 8lbs of boost. I thought
it was because of our low octane rating here in CA (91 octane). So today I put
straight 100 octane race gas, with no apparent improvement. Timing stayed the same.

It also does it with 4lbs of boost, same timing/fuel. What I also did was totally
eliminate boost, I left my wastegate open and had no boost. The j&s still pulled timing back at 6500rpm, I made it really rich and again with 18 degrees of timing from 6300rpm to 7400rpm. Im nearing to a conclusion that it might be valve train noise? I just do not want to set the sensitivity any lower without consulting. Im also taking that it is a significant noise it is picking up for it to pull 20 degrees? Do you have any suggestions?

Thanks for your time."

Basically you could say my base timing is set to 8-9 degrees, I pulled about 8 degrees. My question is what else can cause detonation before I set the sensitivity lower? Im running NGK 7's gapped at .30

Here is my current dyno from friday. You can see where its pulling timing right around 6300rpm, I should be able to make power til 7000rpm




[Modified by LsTurbo91, 12:48 PM 11/11/2001]

 

were is your knock sensor?

 

My knock sensor is by the alternator.

 

how do you like the zdyne ECU?? Is it the Gold version? How would you compare it to the Hondata? I also have a pre-obd vehicle...

I have my haltech ordered, but was modified to use the stock obd1 honda wire harness(I had a pre-obd--->obd1 ecu jumper made also), I'm not sure if I can tune it though....I wanted to know if the Zdyne is easy to tune compared haltech per horsepower output potential...

 

Why dont' you try setting your timing at 15 degrees. 18 sounds a bit much for a turbo motor. It retarding the timing cause its sensing detonation.

 

This is at 6300rpm @ 10lbs not 750rpm idle, like i said think of it my base timing as at 8-9 degrees. Normally if timing was not retarded it would be 27-28 degrees at 6300rpm.

 

I like it a lot!! I can virtually go to any dyno and tune it. I can also tune to race gas save it, then run another file if im running low octane. Its so easy to tune, i can't express that enough!! Last dyno run i went to I had like 22 runs in an 40 minutes!! geez, i was on the clock thats why.