help find lost hp??
Thread Starter
Teching In
Joined: Feb 2003
Posts: 44
Likes: 0
From: yukon,ok
help find lost hp?? i tuned my car with ls1edit a week ago and put down 377 w/11.5af ratio NA and 483hp w/11-10.5af ratio on 100 shot. i had some other runs of the scale even rich running rich on almost all runs but my plugs where really black fouled up so i changed them the other noght now..
as soon as i started the car it changed my idle and i dynoed today using the same tunes as above 3runs first 2 na 356hp and 363hp w/14.5af ratio and 458hp w/14.5af ratio 100shot
the only thing changed is plugs and af has gone from 11-11.5 to 14.5 any thoughts i dont have a scanner so cant post graphs
as soon as i started the car it changed my idle and i dynoed today using the same tunes as above 3runs first 2 na 356hp and 363hp w/14.5af ratio and 458hp w/14.5af ratio 100shot
the only thing changed is plugs and af has gone from 11-11.5 to 14.5 any thoughts i dont have a scanner so cant post graphs
TECH Enthusiast
Joined: Mar 2003
Posts: 503
Likes: 0
From: Temple, TX
do you really need that high of an octane? what kind of compression are you running? stock? you shouldn't need anything over a 93 octane if on stock compression and really won't see gains from the higher octane. You'll be looking at fouled plugs, O2 sensors and cats with that high octane.
I'm not sure of the drastic change in A/F though.
I'm not sure of the drastic change in A/F though.
Thread Starter
Teching In
Joined: Feb 2003
Posts: 44
Likes: 0
From: yukon,ok
Originally Posted by BlackWS602
do you really need that high of an octane? what kind of compression are you running? stock? you shouldn't need anything over a 93 octane if on stock compression and really won't see gains from the higher octane. You'll be looking at fouled plugs, O2 sensors and cats with that high octane.
I'm not sure of the drastic change in A/F though.
I'm not sure of the drastic change in A/F though.
TECH Fanatic
Joined: May 2002
Posts: 1,402
Likes: 1
From: CT,
Fouled plugs would cause a difference in a dyno run, you went from running rich on your first dyno to running really lean , I would play with the edit and get your airfuel close to 12.5 and see what your power is then. I would not run race it with that Airfuel that is dangerous.
