Here are the first logs I have done. I cut them down to RPM, TPS, O2 volts, Knock and Timing. I have the full log if anyone would be interested.

Seems like alot of knock to me?

www.midatlanticperformance.net/evoixdatalog.xls

Thanks,

Girlie

 

You should tune out the knock, if possible. Try pulling a bit of timing or added some fuel.

Do you have a wideband? What AFR are you running? What boost are you running and what octane gas?

You should really try to get to a knock free tune.


Eric

 

No wideband yet. Hopefully in the next month or so. I am running 20-21 psi per the Autometer gauge, it usually tapers to around 18-19 at redline. 93 octane.
When the car was tuned on the dyno, AFR was pretty much 11.0 from what I remember.

Girlie

 

For the Knock Sum, what should we be looking for? 0 is in the safe? What number is inthe bad?

 

At WOT (TPS=100) you want 0 knock counts across the board.

+1 to what l2r99gst said.

l8r)

 

Wow that is a lot of knock. Normally you will see like 1 or 2 that will pop up which are probably flukes, but not throught entire rpm range. I have never seen it that consistent. Whoever tuned the car maybe tell them you need a retune for free. I would love to see a screen shot of your timing map, but I am sure your tuner would get mad lol. Man that sucks though, good luck and be careful. If you make another pass and you still have knock then you know it is not a fluke. Ecuflash really shedding some light on a few things

 

Dang I thought I was knocking bad When I saw 3 or 4 counts for very brief moments randomly.
It is funny to see that you still maintained the good timing numbers in the mid range. It should have pulled a lot of timing with the stock map.

 

Probably because whoever tuned it made the high octane and low octane the same so it did nothing have much to retard to my guess.

 

I thought that it had been determined that the ECU can pull timing with both high and low maps set the same. I would think that it kinda works like Long Term and Short Term Fuel Trims. It could pull some timing while staying in the high octane map on seeing some knock. As it continues to see knock and pull timing it starts to use the low map or somewhere in between.

I think that its a little more sophisticated than running in the high map if there's no knock and running the low map if there is knock.

 

if ur knocking 9 around 4300 u might be knockin even worse at torque spike around 3500-4000

 

Whats your fuel map look like? Are you using the stock IX pump?

 

I would surmise that it was whatever came with the BR stage 1. Would be interesting to have Girlie confirm that.

l8r)

 

Do you have any logs from 3500 rpm up? It appears that you should consider getting it retuned.

 

I will try to answer all the questions that I can remember. Here goes...

Stock fuel pump
Hi and Lo maps are the same
Tuned on Buschur's dyno



I am going to do some more pulls tonight just to verify the findings. I also did another pull last night, on it I went WOT from lower rpms (2500 in 3rd). It showed no knock at all until 6500 rpms on that pull (around 5-6 counts thru 7400rpm). I had 8 degrees timing at peak tq (3500) and it steadily rose until knock at 6500 rpm.

Could it be the hi-flo cat causing the knock on top end?

 

did u fill up with 93 octaine in ohio, but only have 91 locally in WV?