My setup is GM St 2, 2.8" PB pulley, Injen CAI, and Ingalls ETD

I never get knock at WOT in 1st, 2nd, or 3rd. I rarely ever go WOT in 4th

Well I did go WOT in 4th today, and as the RPMs climbed closer to 4, 5k, i started seeing up to 4.5* of knock?

Can anyone explain this? How could I fix it if it will be a problem? Thanks guys.

 

could be the cold weather. Deffinetly dont go as far as 4th for now until u get a retune man. You timing might be too high? your AF is too lean. Could be a bunch of reasons. I was getting 4 degrees of knock with my 2.6 and I had to take out 5 degrees of timing and now I get NO knock and my AF is 11.5-12

 

or I just remember that the COT protection and kicks in around 5k, but this only richens your car so it couldnt be that. Maybe you car was wayy hot, and you MAF Feq got freaked out at such high speeds(Used to happen to me until I raised it to 1300000) and then with the COT P on the car was running soo rich it pulled timing.

 

the car was running normal temps....around 190*

hp tuners is the only way to adjust timing and AFR right? i'm sorry i'm oblivious to tuning

 

Stupid question whats WOT?

 

Wide Open Throttle

 

I get 3-4* with ONLY stage 2. but i believe it is because the best octane i can get is 91, and lately my IAT1 has been about 30 Degrees Farenheit hehe.

Ive tried asking if 3-4* is a problem but no one seems to answer....

 

yes any degree of knock is not good

 

*shrug* what can you do, its a stock car with stage 2.

 

what plugs do you have?

 

stock....i have a set of 1 step colder NGK sitting here....havent tried them yet.

 

I would definately try them. Also, how do you read degrees of knock. I am guessing a scan tool.

 

Okay here's a few answers to everyone's questions.

Todd from Intense Racing has told me that up to 7 degrees of knock is "acceptable". Of course any knock at all is not good but you have to remember that usually for every .5 degrees of knock you get, the ECM is going to pull at least a degree of timing.

Now with my mods I am currently having a problem with my A/R. Right now it is in the 12.5 range through the RPM band and I don't get to the 11's until above 6k. I need a custom tune bad or I need to send my PCM off to Intense to get them to reflash it. Now on really cold nights, sometimes I never make it to the 11's at all...which is not good. Target AFR's on our cars is around 11.8 to 11.9 all the way through.

Now as far as knock goes, I am getting 3 to 7 counts of knock at any given time, even in third gear. But in fourth gear it definately goes up. Also look at your IAT2's though because usually when the go up, the knock goes up.

I would try the colder spark plugs. I am running NGK BKR7E's....the Autolite copper plugs that come with the Intense kit, regardless of what Intense says are not good. I was getting spark breakup in the upper rpm's. Went to NGK's and I haven't had a problem, except I would recommend playing with your gaps some. Right now I am at .035 but I think I need to drop down to .030 to prevent the spark from blowing out in the upper rpms.

Hope this helps.

Later,
Vince.

 

i have those plugs and they are set at .40 .... maybe i should regap them at .38 or .35 and then do a few runs?

and btw i am getting my readings from my interceptor

 

how would i change A/F and timing? is that done by HP tuners?

 

Aeroforce interceptor.

and im only getting that reading for a very short blip from aboud 4k-5k rpm in 4th.
and about 1-2* from 4-5k in 3rd.

98% of the time its 0.0

 

hmmm
looks like this


RPM----------1-----------2----------3---------4----------5-----------6----------7

0--0--0---0---0---0---0---0---0---0---0----0---0---1---2---1---0---0---0---0---0

i had my datarate maxed out and I only see actual numbers for about 3-4 refreshes tops...

but like i said....with 91 octane and snow+ 30 farenheit im sure that is causing the problem more than anything

 

yeah occasionally shifting will give a little bit.

Im trying to find some 94 but everything close to me only has 91 :/


The weird thing is...im completely under warranty with only stage 2....and basically theres nothing gm can do for me lol

 

U guys have nothing on me.....here's what mine looks like

RPM --1--------2--------3-------4--------5------6-------7----7400
KR 0---0---2--3---2---4444444433333322244443334??????!?!?!?


I have one question: WHen you take away timing in HPTuners, are you losing hp? It would make sense to me that u were....but I want to know for sure.. Right now my car is set to about 20 degrees...but I think it's too high.

 

Yup hptuned..the sad thing is that that knock is in 2nd gear.....I haven't had the ***** yet to try 3rd, 4th, or what would probably kill my car, 5th....I seem to think there's a knick on one of my pistons or something that is causing detonation....my freakin car sux man. And now my boost bypass actuator went. That crapped out so I need a whole new supercharger. AHHHH. I'm just going to sell this car for $5 when the camaro and challenger comes out and pick me out one of those.

 

Yes. You need HP Tuners and someone that is willing to tell you, show your, or flat out change it for you.

If you're getting knock only in 4th during a WOT run through the gears, I bet it is your IAT2. Do the dual pass, upgraded HE, or both, and you won't have a problem.

 

20* of timing with a 2.5!!!! You need to pull some timing bad. Blown 4-banger can only run about 20* with 101 octane with his 2.6 and Cobra HE with out getting knock.

 

i think i will go drop the NGK's in tommorow morning and go for a drive.

Ill post here if i find any changes maybe ill drive around and find some 94 oct somewhere in this snow covered country lol,

 

I was getting knock, while trying to tune for my pump gas tune. I kept tuning until I got 0.0 across the board. As it ended up I could only run 15.5* of timing with a garentee of no knock. I could run more but I would get occation knock here and there. Also if your having trouble with a spacific area getting knock, try shortening the knock decay. It controls how fast the computer adds timing after getting knock. The stock setting is .450, and mine is at .700 so instead of getting knock like
0-0-0-3-2.6-2.1-1.7-1.2-.8-0-0
I get knock (if I did get knock)
0-0-0-3-2.1-.8-0-0-0

 

No, after some MAF tuning and VE stuff I can get 24*. Well that was with just the HE so I could prolly get like 26-27 now.