what is the difference between a standard tune and a open loop tune?
#1
what is the difference between a standard tune and a open loop tune?
also...can an open loop tune slow the car down in the 1/4mi?
last year my car ran a best of 11.1@123mph. this year i added the fast 90mm intake and a new cam. i gained 24 peek hp and tq and in some spots under 5,000rpm's i gained 33hp. this year the car only ran a best of 11.28@122 in the 1/4mi,this year the car is on an open loop tune. for racing what tune is better open loop or standard tune?
thanks, mike c.
last year my car ran a best of 11.1@123mph. this year i added the fast 90mm intake and a new cam. i gained 24 peek hp and tq and in some spots under 5,000rpm's i gained 33hp. this year the car only ran a best of 11.28@122 in the 1/4mi,this year the car is on an open loop tune. for racing what tune is better open loop or standard tune?
thanks, mike c.
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#9
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Originally Posted by mike c.
what do you mean done correctly? like i said i gained power at all rpm's,but still made np gain in the 1/4mi in e.t or mph.
meaning if you are commanding the optimum AFR and Timing for max TQ/HP, you won't loose a thing. If your fueling or timeing is not optimal for you combo you will loose power.
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Originally Posted by mike c.
yeah i know,but ganining power i should of gained e.t. i just thought i would look into this new open loop tune that my tuner put into my car to see if that may cause something.
thanks.
thanks.
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Its possibly running lean at the track - when it was spot on when on the dyno.
The tune might need to be shifted just 0.3afr points richer.
More power will make it quicker at the track in good weather.
My baby cammed car is tuned in open loop using EFIlives custom operating system.
It has done 11.619/116 mph 1.583 off just a 3600 stall and 3.73s at a race weight with me in it of 3625lb
Its also getting 30mpg at 70mph cruise.
The tune might need to be shifted just 0.3afr points richer.
More power will make it quicker at the track in good weather.
My baby cammed car is tuned in open loop using EFIlives custom operating system.
It has done 11.619/116 mph 1.583 off just a 3600 stall and 3.73s at a race weight with me in it of 3625lb
Its also getting 30mpg at 70mph cruise.