New tuner, 2nd-3rd gear pull

[ryztriumph]

Hey guys, I just got my taxtrix cable and 680cc injectors put on and have been fooling around with those, and ceddy big maps, for about a week on my car. I have got it running pretty good and have read so many ecuflash articles my eyes are bleeding.

I did a pull from 2nd to mid third or so and got some knock. I backed off timing a few degrees. It is also a bit richer than I would like, maybe raise injector scaling a bit. Also, at the end of the pull, log id 77, it shot up to 7 counts of knock. Would this be considered phantom knock, since I was off the throttle and out of boost? Could the throttle plate slamming close or the brakes being hard applied raise the knock sensor?

I am sure I will get it eventually, I just thought I could get some advice from some tuning gurus and further my knowledge.

Profile is up to date.

Thanks!!

 

[lewishamilton]

Did you ever figure this out?

I'm getting ready to get the cable to flash my 99 ecu with some injectors, much like you. The only reason I'm hesitating is the slight decrease in support for the flashed 98/99 than DSMLink on here.

 

[ryztriumph]

I just kind of stopped worrying about it. I figured it couldn't knock while off the throttle. It kind of went away and now that I have a fmic, it doesn't do it at all. It may have been heat soaked or something, Idk.

If you need help with anything, just shoot me a pm or something and I'll help you out the best I can. Ecuflash isn't quite as easy as eculink, but it works well once you get it going.

Good luck!

 

[97gsxIA]

Throttle plates and braking will not affect the knock sensor. Although, lifter tick, improperly torqued bolts on the back of the block (A/C bracket, IM support, centershaft collar and most importantly the knock sensor) MAY confuse the sensor into thinking it's knock.

Making sure the knock sensor and every bolt on the back of the block are torqued to spec will eliminate phantom knock caused by those areas. Always check on the condition of the knock sensor (Black goo!)

Remember knock is directly affected by intake temperatures and compression in which too high will cause detonation sooner than on a cooler, low compression motor. This is why it is harder to run as much boost on a higher compression motor than it is a lower (closer to stock) compression without seeing knock sooner.

Many (including me) will set the knock sensor(via Link/AMS etc.) to only pick up knock over 4500+ rpm.

This eliminates part throttle and closed loop "phantom knock" picked up by the ECU.