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Author
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Topic: Tuning question for the experts......
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50DADDY
CAFords OG
Member # 3076
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posted
 
 
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?
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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JohnB
Tech Moderator
Member # 969
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posted
I'd put it back together and check it. It may not need a re-tune.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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Nastysvt
¯
Member # 6431
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posted
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.
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Built 98 Cobra
Built C6 Z06
Daily TBSS
Posts: 2575 | From: Valley to the Bay | Registered: Jan 2006
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50DADDY
CAFords OG
Member # 3076
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posted
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.
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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JohnB
Tech Moderator
Member # 969
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posted
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.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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hidnn.o.s.
¯
Member # 1219
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posted
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% ![[patriot]](graemlins/patriot.gif)
The money you claim to save can save you the entire car ![[Cool]](cool.gif)
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R.I.P. Willie G. You are missed on this forum
Posts: 15950 | Registered: Apr 2002
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copcar
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Member # 10113
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posted
more timing slightly less fuel low rpm. same timing slightly more fuel midrange and upper rpm range.
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12.37@ 109.34.NA 894DA Old Nitto 555 DR's Gt40 irons. B cam/1.7's, All emissions equipment on the car, stock air box. UPR catted X pipe.
Posts: 485 | Registered: Jun 2010
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