knocking under 1k rpm's

cody's v6 stang · 06-13-2009

my cars tends to knock or sputer a few times when i get under 1,000 RPM's i think it has something to do with the tuner i just got a few days ago, it has only been doing it since then. could it be my air/fuel ratio? or is there something really wrong with the engine?

shinerstang · 06-13-2009

Which tune are you using?

cody's v6 stang · 06-13-2009

um im not sure it was 87 preformace or milage. i tuned back to stock and it went away so im going to get a new tune tomorrow and try again

shinerstang · 06-15-2009

Quote:

Originally Posted by cody's v6 stang

um im not sure it was 87 preformace or milage. i tuned back to stock and it went away so im going to get a new tune tomorrow and try again

Correct, either you are not running premium gas in it, or the tune is off. You should be running at least 93 octane on a performance tune......

cody's v6 stang · 06-16-2009

i feel like im killing my stang

yes it was the defualt tune of 93 preformance but it only had 87 in it, which explains the sputtering in low rpm's-not a high enough octane level in the gas. i retuned today it to 87 preformance untill i use it all up, then im going with 93 octane and a 93 tune and i'm going to see if i can feel a difference...

shinerstang · 06-16-2009

Quote:

Originally Posted by cody's v6 stang

i feel like im killing my stang

yes it was the defualt tune of 93 preformance but it only had 87 in it, which explains the sputtering in low rpm's-not a high enough octane level in the gas. i retuned today it to 87 preformance untill i use it all up, then im going with 93 octane and a 93 tune and i'm going to see if i can feel a difference...

You will feel the difference. Detonation is very bad........