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03-09-2016
Hey guys im wanting to convert to e85. I just had a question about the necessity of upgrading the stock fuel pump. Some people say upgrade some people say stock with a hotwire is fine. Also since im topswapped i know the gtp have 2 speed pumps and mine is one speed but i couldnt find any info on if the gt pumps have the same fuel flow rate. Tha ks everyone!
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03-09-2016
What are your mods?
03-09-2016
if I remember right, he is top swapped, with rockers, headers, and possibly 42.5 injectors.Originally Posted by GTPpower
03-09-2016
Topswapped, stock pulley, fwi, headers
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03-10-2016
A gtp pump will start losing pressure around the 3.0 pulley range, dependant on a few things. You should be fine down to about a 3.2, I would think.
03-10-2016
Connect a pressure gauge on a long hose to the fuel rail. Tape it to the windshield and go for a ride. If it build pressure with boost all the way through WOT, then you have enough pump.
Only if it can't keep up, do you need to upgrade.
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