Jerking at 5 grand

[Yngvar]

I have finally got my car running and I'm trying to tune the car some put I don't know what to do right now. I get a violent jerking when I hit 5 grand I'm pretty sure its in the tune and I don't know what to do. I don't have any boost leaks. What do I need to do to my tune? Her are some logs

 

[sparco431]

run a boost leak test first, #1 rule with dsm's. ## vids arent working btw

 

[Yngvar]

Well I have boost leak tested it and it says so in my first post and its not a vid that I posted they are logs form dsm link

 

[snowborder714]

Well, it looks like the only thing you adjusted is the fuel sliders, which you need to reset all of them to zero.

I have never, ever seen a need for positive fuel, let alone maxing out the sliders from 6500 RPM's to the top.

You need to start with the basics - airflow tuning. Then, to properly go any further with your tune, you need to get a wideband.

You also need to adjust your properties. Go to Display > Values, click on each item in the right box, and then click on the Props button. Make sure all of those values are correct. I instantly noticed your injector settings are still for the stock 450's.

Once you do that, you can post back and let us know what's up.

 

[Defiant]

5000 is the vicinity that weak plug wires tend to show in DSMs.

 

[xreaction122]

my gsx did the same thing at 5500.i had faulty spark plugs. 8 dollar fix

 

[Yngvar]

I just put new plugs and wires on my car

 

[snowborder714]

What did you gap the plugs to?

 

[Yngvar]

I gaped them at .30

 

[snowborder714]

They should be gapped to .028.

 

[wannarace]

Well i see you have the fuel pump and AFPR. The only 2 things i have experienced is missing ignition and not enough fuel pressure. Check, check and check again.

If you know you don't have boost leaks, your plugs and wires are good and you still have the problem, start lookin for a fuel leak.

 

[TSiAWD666]

.028, not .28.

 

[snowborder714]

Thanks for the correction. Typing fast and multitasking = messed up posts

 

[Yngvar]

Well i see you have the fuel pump and AFPR. The only 2 things i have experienced is missing ignition and not enough fuel pressure. Check, check and check again.

If you know you don't have boost leaks, your plugs and wires are good and you still have the problem, start lookin for a fuel leak.

I did just put my afpr on this week end but I have all is had problems with this car

 

[wannarace]

That's the nature of these beast. they take alot of TLC but they give a crap load of fun.