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TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Old 07-08-2009, 09:15 PM   #1
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what can i do to improve mpgs
i have a 85 camaro 305 tpi engine 20,000miles rebuild, with the holley command 950. i am getting 22mpgs on the highway (which is great) but im only getting 11mpg in the city. car runs about 205 temp, whould increase temp a little, help mpg? looking for some ideas on what i can do to improve mpgs? like msd box or headers
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Old 07-09-2009, 01:06 AM   #2
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Car: 1985 Camaro/ 1987 Camaro
Engine: 305 TPI (400 in progress)/ 3.4l
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Re: what can i do to improve mpgs
well what is it, tuned port injection or carb?
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Old 07-09-2009, 08:24 AM   #3
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Re: what can i do to improve mpgs
He has a TPI with Holley 950 computer. I'm running the same thing. If you want, you could email me your file so I can see what your current tune is. Are you running a WB O2 and is your timing controlled by the computer? I would leave the temp alone.
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Old 07-09-2009, 08:33 AM   #4
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Re: what can i do to improve mpgs
Dont waste money on an msd box. I have herd headers will help but have never seen gains myself. Whats your gearing?
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Old 07-09-2009, 10:14 AM   #5
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Car: 1985 Camaro/ 1987 Camaro
Engine: 305 TPI (400 in progress)/ 3.4l
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Axle/Gears: 3.27 Posi/Disc / 3.42 Open

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Re: what can i do to improve mpgs
ahh, understood, didnt know holly made computers for these things
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Old 07-09-2009, 07:40 PM   #6
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Re: what can i do to improve mpgs
my car seems tuned pretty good. i do have the wideband and computer is controlling timming.
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Old 07-09-2009, 07:40 PM
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