Worried... Just increased spark timing

[Matt G]

My car feels like its to fast. I can't floor it in first gear at all or my tires spin or hop and if i accelerate through a turn in 2nd gear now my car goes sideways..

I only took it on 1 WOT run because it seemed to fast, and I want to make sure I am not damaging anything before I continue.

This is what I did.. read my PCM added 2 to the high octane table, copied the high octance table into the low octane table(after I added to previouslly) Then wrote it to my PCM

Was that right or did I do something wrong?
I am on my girlfriends PC so I can't post my scan.. she has win 98 and my jumpdrive doesn't register on her computer so I will post the scan tomorrow. There is KR at the top of first gear and at the top of 3rd gear, the most KR in first gear was 1.1.

[ December 06, 2005, 10:52 PM: Message edited by: Matt G ]

[97rs4life]

1.1 is nothing at all, probably false knock. Did you copy the original high octane into the low octane table, or the high octane plus 2 into the low octane?

[Matt G]

high octane plus 2 can I increase the spark timing more?

[shenanigans]

yeah probably... I am playing with adding timing,a nd I see knock in the top end of each gear too...

Ideally you want 0 knock.

[Matt G]

and to remove knock i would decrease timing I suppsose? How do i know which cylinder mass to decrease the timing in or should I do it for the entire row that the rpm is at?


what are some other thing I can do in hp tuners to add some horsepower?

increasing the timing has given me a VERY noticable increase of horsepower.. i was amazed when I floored it.. doesn't feel like the same car

[Matt G]

I added another 2 to the spark timing, and changed the injector from 2.17 to 2.45, I scanned it and The highest KR I saw was 1.7, that was only at one point in the run though, other then that I saw KR in one other place and the highest it went was 0.9

How do I get rid of the KR that was 1.7?

It seems to keep happening at the top of 1st and the top of 3rd (in the 3600-4800 range)

[SLICKSIX]

Does increasing spark timing really help that much?? And if it does, it'll probably make a big difference in gas right???

[Matt G]

it gave me a large boost in torque.. I can feel it when I press the accelerator, there was a very large difference going from the stock tune to adding 2 to the table and copying it to the low octane table

not to mention how I can't floor my car in 1st gear with out the tires spinning or hopping and in 2nd gear I could always accelerate through turns, now if I try to do that my rear tires spin in 2nd

[Turbo V6 Camaro]

low octane table should be -4 from the high octane table

what is the hit count on the KR your seeing?

[Matt G]

The highest i have seen is a 2.1, and thats after I increased the timing by 7

Some one just told me I wasn't suppsoed to increase the whole table when increasing the timing.. what am I suppsoed to increase? I will change the timing of the low octane table.

[ December 05, 2005, 09:18 PM: Message edited by: Matt G ]

[Turbo V6 Camaro]

send me your bin file if you can

[Matt G]

I have to wait until tomorrow to send files.. I have been logging my runs and taking the KR histogram and subtracting that from the high octane table.. is there a way to do the histogram all at once instead of doing the cells indvidually?

How do I create a .bin file? I know how to make a .cfg but i've never made a .bin

[Turbo V6 Camaro]

well its .hpl i think if you have 2.0

the bin file is the file you tune/open to make changes... email that and your scans to me

(I can tune 1998 ;) )

[Matt G]

okay I will send them to you.. but I was hoping to try to learn how to tune my car. Will you tell me what you did so I can compare the two files (stock and the modified) that way I can try to learn

[RedFrk13]

You need to watch the KR and timing histogram. These will tell you exactly which fields are being used on a WOT run. It will be mostly the last two columns towards the bottom. I would just start with increasing the timing in those cells. The cells that have KR, decrease the timing in that cell by the amount of KR.