[Diy_efi] TBI or TPI?

[Ashley Evans]

Sorry for the n00b.  question.  I mostly lurk here to read and learn.

TBI and TPI mean what??

I thought that TBI means Throttle Body Injection, or am I sorly mistaken?

Regards,
Ashley Evans

On 14/9/2005, "Rick McLeod" <dunvegan at sbcglobal.net> wrote:

>Clearly TBI would be an easy swap, replace the carby
>w/ a TBI unit, add some computer, wiring, and a few
>sensors and you're off and running.
>
>TPI is a much nicer solution, hence why GM went to it.
>It's long runner design lends to very good low end
>torque, but in stock form has limited top end RPM and
>HP drops off toward the top end. That shouldn't be a
>factor in your application, actually TPI would be a
>great way to go. It is frequently dubbed a tow-truck
>motor. There are a couple ways to even leverage it
>more but in stock form would be great. There are a
>couple aftermarket companies that have nice TPI
>packages, but with a little work salvage yard or ebay
>should yield all the necessary parts and leave you w/
>just wiring. The main issue is fuel lines, as you'll
>need a return line and a high pressure pump which are
>not requisite of a TBI, and I would suggest from
>experience to go w/ a Painless wiring harness rather
>than fighting w/ a factory loom and making it work.
>You'll appreciate having spent the extra in
>elimination of frustrations and it being plug'n play.
>
>Good luck
>
>
>
>--- Mike <sonoma at shaw.ca> wrote:
>
>> I was thinking of adding TBI or TPI fuel injection
>> to my  83 Chev 350 (M) which is in a 11000 lb GVW 1
>> ton chassis.
>>
>> Has anyone setup both types of fuel injection are
>> the costs for TPI a lot greater.
>>
>> What are the advantages and disadvantages of TBI and
>> TPI
>>
>> I'm considering  going with FI because I'm hoping to
>> get better fuel economy, better drivability, more
>> torque and horsepower if possible.
>>
>> I don't want to change the heads on the engine just
>> the intake.
>>
>>
>> Any ideas or suggestions would be appreciated
>>
>> Thanks...>
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