TPI Vs. Carburetion - Team Camaro Tech
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post #1 of 7 (permalink) Old Jan 17th, 01, 08:01 AM Thread Starter
 
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I was wondering if someone could explain to me the technical differences between TPI and 4BBL Carburetion. And which is better performance wise if you bought performance carburetors. Much appreciated, thanks!

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post #2 of 7 (permalink) Old Jan 17th, 01, 08:53 AM Thread Starter
 
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or. er, possibly refer me to a webpage?
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post #3 of 7 (permalink) Old Jan 17th, 01, 09:03 AM
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Well, for starters a carbuerater is a mechanical air/fuel metering device. TPI is electronically controlledby a computer throught the use of engine mounted sensors. The advantages of TPI over a carb are that fuel is evenly distributed to each individual cyinlder. The carb basically meters a specific amount of fuel that can be adjusted to the needs of the engine.The carb must rely on intake manifold design in order to distribute the fuel/air. The TPI and EFI in general, due to its more efficient use of air/fuel distribution between cylinders have better gas mileage. You can pretty much make just as much power with a carb as EFI/TPI does. I prefer EFI b/c its much easier to cold start and the fuel efficiency is a big plus. I would personally go with an EFI setup. There are many systems that work much better than the stock TPI unit. Check out the offerings by Edelbrock, Accel, and Holley for their out of the box bolt on systems. Just as a side note, the Edelbrock system does not require a laptop to tune. I hope this clears up some of the confusion.

[This message has been edited by jvolk81 (edited 01-17-2001).]
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post #4 of 7 (permalink) Old Jan 17th, 01, 01:20 PM Thread Starter
 
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Tremendous help! THank you!
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post #5 of 7 (permalink) Old Jan 18th, 01, 04:09 AM
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I have the Accel TPI kit installed on my '69. It's really slick compared to a stock TPI setup. With their software you can adjust your timing curves, fuel curves, warm up enrichment, air temp adjustment, cold start mixture. You can choose open or closed loop. Right now I'm running closed loop until about 70% throttle, then it switches to open loop and really pushes me back into the seat. You can save/load different settings from a laptop whereever you like -no opening the hood. I would definantly prefer a TPI setup over a carb. I could never rebuild a carb but testing sensors and such is easy. Beware though, an aftermarket EFI setup can get pretty expensive.
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post #6 of 7 (permalink) Old Jan 18th, 01, 09:08 AM
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Expect to spend between $2000-$3500 for an aftermarket bolt on deal.
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post #7 of 7 (permalink) Old Jan 18th, 01, 10:53 AM Thread Starter
 
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lol omg, i could get another camaro for that
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