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| Pocono87 | air-fuel ratio | ||
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Guru Newb
 
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Ok...here goes...I had a renegade intake put on my car...wether imagined or not,car seemed to run better,more power...had it dynoed...tech did 2 pulls...told me when rpm hit 4600-4700 power would drop...I ask if he knew what would cause this..he said it wasn't getting enough fuel to match air intake...any thoughts on how or what to do to fix this issue? thank you for any input
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Posted on: 2017/7/2 1:12
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| teebee | Re: air-fuel ratio | ||
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2014 Memorial Day Car Show Winner!
 
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A friend of mine, on another forum,put the Renegade manifold on his 82. He had to really work at it, but finally got the 82 to put out the power levels he was hoping for. If you are interested, I can put you in touch with him.
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Posted on: 2017/7/2 13:59
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2007 Atomic Orange 3LT coupe. Borla Exhaust One of Americas' proud Deplorable 
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| Pocono87 | Re: air-fuel ratio | ||
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Guru Newb
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Yes that would be awesome and thank you
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Posted on: 2017/7/2 22:24
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| rklessdriver | Re: air-fuel ratio | ||
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Senior Guru
 
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What was the Air Fuel ratio when power dropped?
Will |
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Posted on: 2017/7/3 17:30
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1984 Corvette. 434 SBC with a Powerglide. Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials. 1972 Corvette. LS5 454 BBC with M20 4 speed. Best Pass - Doing good to just pass a gas station. |
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| bogus | Re: air-fuel ratio | ||
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Grand Imperial Pooh-Bah
 
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That's the computer... and the throttle bodies...
The first thing you should do is upgrade the ECU from the 1984 part to the 1987 Pickup truck part. There is some wiring changes, but the speed of the computer and its ability to tune faster is valuable. Check fuel flow... the flow is rated for that kind of RPM where the engine dies naturally... you might need a bit more pump, but not a lot more. The other trick is to use the 454 big block throttle bodies. They flow much better. |
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Posted on: 2017/7/3 19:39
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Matatk | Re: air-fuel ratio | ||
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Webmaster
 
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Repin the ECM to a newer (faster) model and have a custom tune made. That should do it.
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Posted on: 2017/7/4 1:13
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