hi all and what do you think of the holley TBI EFI system ? is it worth it or what i have a gmc 95 truck 2wd with 305 cid stock i just add the msd 6A on it and manual trans. and magnaflow muffler and i got agreat deal on the helley EFI so what do think is it worth it or not and would my stock engine handle this 670 cfm or not . check this site

http://www.holley.com/HiOctn/ProdLin...SFI/502-6.html

and im planing to put some stuff in the future like edelbrock manifold and jet six pack chip and some other stuff .stock

and for the TPS connector can i change the holley TPS connector with stock 88 GM model connector with out cutting the stock connector of my truck ?

 

is thear any one how can help me with this ?

 

It will work, BUT (don'tcha hate those but's) you will probably have to either have to burn a new chip or have one burnt for your application. The reason seems to stem from the delphi injectors that Holley is now using (and no the stock GM injectors will not interchange...BTDT). The flow a LOT more fuel than the stockers, which your computer "thinks" is still on your TBI. I've been working with Brian over at TBI chips to get mine dialed in. What we've had to do is to shorten the base pulse width to lean it out some and a few other tweaks but we're almost there. Now there are many folks here who insist on burning your own (which I plan on doing eventually), but not all of us have the knowledge or equipment to do so yet.

Some folks have bolted the 670 on and have had no issues, but they seem to be the minority. BTW my chip takes full advantage of the increased air and fuel flow and the results are great.

 

Hey welcome aboard. Your question is one that is frequently asked and covered in a lot of detail. If you spend a few minutes searching you should find you answers. Also, check out the "new to TBI" thread at the top of the page. It covers when you should consider larger TBI units. Because I am so confident that you will find your answers I am gonna shut this one down. Any questions or concerns can be PM'ed to me. Good luck and happy modding!

Holley 670 TBI thread