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Old 11-26-2024, 07:37 AM   #5
Megahurtz
Snackbar Tuning
 
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Drives: 2023 SGM ZL1
Join Date: Oct 2016
Location: Florida
Posts: 1,521
Yup, it is a nice jump over the stock LT4 stuff but its mostly useless without XDI 30's. The Bigger injectors is what gives you the additional spray time to take advantage of the extra fuel flow from the Goliath. On the stock LT4 stuff I could only run E20-E30 max.

I'm somewhere around 750rwhp on E50-E60 with the Goliath and XDI 30's. The DA was negative 500 the other day and the car hit 16psi up top. The Goliath and XDI 30's were holding on for dear life at redline on E50. In warmer weather I can run E60-E65 just fine when the DA is in the 1500-2500 range and I'm only hitting 14.5 PSI up top. I've run it on E70 in the summer before and it was really pushing the fuel system to the edge.

Add a cam, where the Goliath was meant to shine, and you will have all the pressure you want. On the stock cam, the pressure starts to drop off if you push too hard.

I just ran a 6.07 60-130 on my setup and the tires slipped on the hit. Had they not slipped it would have been a 5.97 run. Normally my 6070mph time is .60 but on this run it was .70.

That said, E50-E60 will get you 95% of the available power. So being able to run an Xport blower, 2.3 upper, big gulp, headers, 107mm TB and still run E60 is a win win. I think its well worth the money to avoid meth or having to add port.

Note: You will want a tuner that has experience with the Goliath hpfp and XDI's. Ted over at Jannetty, Katech or myself are the three I know that have experience with this pump. You have to setup the tune correctly or you will get some odd results.
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