SolarFlare
Well-Known Member
Yea I run it occasionally. I’m happy how car is now. Don’t feel the need to push it.
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ahl395's Build Log - Methanol Injected / P1X / 4500W sound system
80FoxCoupe
Well-Known Member
Should rip!!One more batch of engine bay pics, because I'm in love with how it looks lol.
Tuesday: Dyno appointment to turn up the boost and timing. 950whp is my goal but I'll be happy with somewhere around 900 if not. After that, ceramic coating gets re-done!
Wednesday = Drag radials get installed.
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ahl395
Well-Known Member
- Thread starter
- #333
Mixed feelings/reviews at the moment but got some news at least. Spent some time tuning on the dyno today.
Started with 597/507 at 13psi and 16* timing on 93. Kind of low but conditions weren't perfect.
Ended with 829/616 at 21psi and 21* timing with meth.
Still kind of low considering that much boost IMO. But I was very impressed by the P1X making that much boost. With the meth I gained 234HP and 109TQ which is definitely nothing to sneeze at. Even at that boost level IATs barely raised +20F and the manifold was cool to the touch. Set up my failsafes and verified those work on the dyno as well. Made max power at 7600rpm.
Now my one issue (aside from seemingly low numbers) is it seems ProMeth oversized my nozzles by a good bit. I only needed 30-35% duty cycle on the pump to reach max boost and timing. Because of that I'm maxing pressure out at around 60psi. 60psi is pretty damn low. Most systems are 100-200psi and I worry about atomization and distribution with this low of a pressure. Currently talking to them about it but I may have to downsize my nozzles.
Dyno graph of my baseline and final numbers!
Started with 597/507 at 13psi and 16* timing on 93. Kind of low but conditions weren't perfect.
Ended with 829/616 at 21psi and 21* timing with meth.
Still kind of low considering that much boost IMO. But I was very impressed by the P1X making that much boost. With the meth I gained 234HP and 109TQ which is definitely nothing to sneeze at. Even at that boost level IATs barely raised +20F and the manifold was cool to the touch. Set up my failsafes and verified those work on the dyno as well. Made max power at 7600rpm.
Now my one issue (aside from seemingly low numbers) is it seems ProMeth oversized my nozzles by a good bit. I only needed 30-35% duty cycle on the pump to reach max boost and timing. Because of that I'm maxing pressure out at around 60psi. 60psi is pretty damn low. Most systems are 100-200psi and I worry about atomization and distribution with this low of a pressure. Currently talking to them about it but I may have to downsize my nozzles.
Dyno graph of my baseline and final numbers!
Chris Barnes
Well-Known Member
Holy crap that's a lot of boost! I think this is pretty impressive for a new engine and meth setup. Out of curiosity, were you running 100% meth, or 60/40 like before? Very cool build and impressive!
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Chris Barnes
Well-Known Member
Wow! You're fuel trims had to be maxed. How much fuel did Lund have to pull?
Jay-rod427
Well-Known Member
Pulling 14% fuel.
Chris Barnes
Well-Known Member
Makes sense I suppose. My conservative setup only pulls about 8% at 9.5 psi on 91 octane shit Arizona fuel with 60/40 meth to water. Any idea what the max fuel trim possible is on these cars?
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Jay-rod427
Well-Known Member
I'd personally be happier if stft was under 5%, and long term within a couple percent. But atleast it's rich and pulling instead of lean and adding. I don't think lund gets too excited about meth tuning.
Do you have a log of that last pull?
Do you have a log of that last pull?
SolarFlare
Well-Known Member
Good numbers but damn a lot of boost
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ahl395
Well-Known Member
- Thread starter
- #345
Yeah, I think with that much boost and timing 950 should be easily achievable.
I believe I found the culprit. Doing some more research and talking to some people more knowledgeable than me, my assumptions about pressure are correct. 60psi meth pressure is NOT enough to properly atomize and spray it.
My meth is working but it's probably just about dribbling out of the nozzles rather than spraying. It's not going to burn very well like this, and I think that's part of the problem. It also makes the resolution of control and my failsafe much smaller, which I noticed when tuning it.
ProMeth severely oversized the nozzles. Double checking their math with other nozzle calculations, its almost 2X too much nozzle. Most calculatiors put me between 24-28GPH. NOT 50. Waiting to hear back from them because I am not a happy camper. A new set of nozzles is $250 and I don't feel I should have to pay for their incorrect calculation. We shall see.
UPDATE: Great customer service. While he tried to convince me otherwise and said he's never heard of not needing 50gph on 900whp+ setup, he is swapping the nozzles out for free. Apparently coyotes just work different and don't need a ton of meth for no reason?
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