Tuning question for the experts...... - Northern California Ford Owners

This is topic Tuning question for the experts...... in forum Tech Talk at Northern California Ford Owners .

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Posted by 50DADDY (Member # 3076) on :

Lets say you have a car with a good working tune on the computer,then you add a larger throttle body,port the intake manifold and do a port match and some intake runner work on the heads.What would you suggest doing with the tune?More fuel?More/less timing?And where would you make the changes?In the low end,mid range,top?

Posted by JohnB (Member # 969) on :

I'd put it back together and check it. It may not need a re-tune.

Posted by Nastysvt (Member # 6431) on :

i would think you're going to need another tune..you have more air flow now doing the throttle body and porting. it all depends on you air/fuel though.

Posted by 50DADDY (Member # 3076) on :

Unfortunately i dont have a wideband or funds to dynotune.I do know my tune was spot on before.So im flying blind here,just looking for a general suggestion to follow.

Posted by JohnB (Member # 969) on :

Spend a few bucks and have it run a few pulls on a dyno to see what's up with it. Otherwise, you're playing with fire.

Posted by hidnn.o.s. (Member # 1219) on :

quote:
Originally posted by JohnB:
Spend a few bucks and have it run a few pulls on a dyno to see what's up with it. Otherwise, you're playing with fire.

100%

The money you claim to save can save you the entire car [Cool]

Posted by copcar (Member # 10113) on :

more timing slightly less fuel low rpm. same timing slightly more fuel midrange and upper rpm range.

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