Peedystablo82
Well-Known Member
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- #1
Okay guys, I have a few questions. First off I have a 2019 mustang GT with a Whipple stage 2 + 3.50 pulley. I have the fore dual pump fuel system. I tune with Lund racing and we had my car datalogged with the same pump e85 that I normally get. We have two naval bases in my area and they both have e85, so the last two times I was in the area of the other e85 gas station. So I decided to get that gas.
I was on the 3.875 pulley when we finished all my data logging and I decided to go down to the 3.5 and when I did, I had the shop give me a Dyno. I was only getting 738 whp at 7600 RPM in 6th gear and 14 psi. Obviously as you guys know, people are making way better numbers than that on here with the same setup I have. So I was concerned.
I sent lund a new data log with the gas at the other pump and he said the reason why my car was so low on horsepower was because of the bad gas he would assume. The thing about it is, we have this page around here for e85 users and somebody just posted from that pump that day with concentrations of e84. So I honestly did not think it was the gas.
Lund told me to get some C85 or some ignite 90 just to see. So I went and spent all that money on 15 gallons of C85. Omg, it made so much of a difference. My car felt so so so much faster, it was unreal. So I'm assuming even though it was reading e84, there is still "junk" in that gas as Lund called it. I don't think C85 compared to the pump(e84) e85 would make that much of a difference as it just did with mine.
I'm going to run this out and actually go get the gas from where we first did all my tuning with and see if it's still pulling timing or not. CRAZY how much faster it felt though!!!!
Also, on my digital dash, I was getting between 9 and 10 psi on the 3.875 pulley. When I was just looking down at my dash with the C85 and new pulley, it said 17 PSI, which is not good!! How do I go from 3 pulley sizes down and get like 7 PSI more on the dash? Lol. How accurate is that boost gauge on the actual digital cluster??
When I was put on the dyno, the guy said I was making 14 PSI.
I was on the 3.875 pulley when we finished all my data logging and I decided to go down to the 3.5 and when I did, I had the shop give me a Dyno. I was only getting 738 whp at 7600 RPM in 6th gear and 14 psi. Obviously as you guys know, people are making way better numbers than that on here with the same setup I have. So I was concerned.
I sent lund a new data log with the gas at the other pump and he said the reason why my car was so low on horsepower was because of the bad gas he would assume. The thing about it is, we have this page around here for e85 users and somebody just posted from that pump that day with concentrations of e84. So I honestly did not think it was the gas.
Lund told me to get some C85 or some ignite 90 just to see. So I went and spent all that money on 15 gallons of C85. Omg, it made so much of a difference. My car felt so so so much faster, it was unreal. So I'm assuming even though it was reading e84, there is still "junk" in that gas as Lund called it. I don't think C85 compared to the pump(e84) e85 would make that much of a difference as it just did with mine.
I'm going to run this out and actually go get the gas from where we first did all my tuning with and see if it's still pulling timing or not. CRAZY how much faster it felt though!!!!
Also, on my digital dash, I was getting between 9 and 10 psi on the 3.875 pulley. When I was just looking down at my dash with the C85 and new pulley, it said 17 PSI, which is not good!! How do I go from 3 pulley sizes down and get like 7 PSI more on the dash? Lol. How accurate is that boost gauge on the actual digital cluster??
When I was put on the dyno, the guy said I was making 14 PSI.
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