Chevy Cobalt SS/TC HPT vs GMS1 vs BMW 335xi (vid)
09-04-2012, 02:52 PM
#21
09-04-2012, 04:19 PM
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Hmmmm, this needs to happen at least for spirited occasions
09-04-2012, 06:36 PM
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09-04-2012, 06:49 PM
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Stock injectors will handle straight E85 up to about 400whp. You have to be careful at sea level/low elevations though when ramping in boost because you can throw a low rail pressure code if you run too much boost down low (ie like 25-28psi). I can get away with a 27-25psi spike around 3000rpm and tapering to ~20psi at redline due to me being at such high altitude.
The nice thing about the SS/TCs fuel system is that since it is direct injection, it does not require any changes to run E85. No upgraded lift pump, no upgraded high pressure mechanical pump, no upgraded injectors. Unless you want more than about 400whp.
Oh, and since you guys are discussing GMS1 Vs HPT E85 tunes, here's how my car ran GMS1 Vs a 50% dialled-in E85 tune (watch on the page in hi-def, it's easier to read the speedo):
Oh, and as far as switching, I bought a spare LNF ECM and used that to do my E85 tune. The ECM takes like 10 seconds to swap underhood. I just carry my GMS1 ECM in my trunk so if I ever get fucked and can't find E85, I just run it dry and switch ECMs at the pump when I fill up with 93. Plus, it gets cold in Wyoming during the winter, so I'll switch back to my GMS1 ECM later this month.
The nice thing about the SS/TCs fuel system is that since it is direct injection, it does not require any changes to run E85. No upgraded lift pump, no upgraded high pressure mechanical pump, no upgraded injectors. Unless you want more than about 400whp.
Oh, and since you guys are discussing GMS1 Vs HPT E85 tunes, here's how my car ran GMS1 Vs a 50% dialled-in E85 tune (watch on the page in hi-def, it's easier to read the speedo):
Oh, and as far as switching, I bought a spare LNF ECM and used that to do my E85 tune. The ECM takes like 10 seconds to swap underhood. I just carry my GMS1 ECM in my trunk so if I ever get fucked and can't find E85, I just run it dry and switch ECMs at the pump when I fill up with 93. Plus, it gets cold in Wyoming during the winter, so I'll switch back to my GMS1 ECM later this month.
09-04-2012, 08:45 PM
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Stock injectors will handle straight E85 up to about 400whp. You have to be careful at sea level/low elevations though when ramping in boost because you can throw a low rail pressure code if you run too much boost down low (ie like 25-28psi). I can get away with a 27-25psi spike around 3000rpm and tapering to ~20psi at redline due to me being at such high altitude.
The nice thing about the SS/TCs fuel system is that since it is direct injection, it does not require any changes to run E85. No upgraded lift pump, no upgraded high pressure mechanical pump, no upgraded injectors. Unless you want more than about 400whp.
Oh, and since you guys are discussing GMS1 Vs HPT E85 tunes, here's how my car ran GMS1 Vs a 50% dialled-in E85 tune (watch on the page in hi-def, it's easier to read the speedo):
http://www.youtube.com/watch?v=V154Ow7Z8zI
Oh, and as far as switching, I bought a spare LNF ECM and used that to do my E85 tune. The ECM takes like 10 seconds to swap underhood. I just carry my GMS1 ECM in my trunk so if I ever get fucked and can't find E85, I just run it dry and switch ECMs at the pump when I fill up with 93. Plus, it gets cold in Wyoming during the winter, so I'll switch back to my GMS1 ECM later this month.
The nice thing about the SS/TCs fuel system is that since it is direct injection, it does not require any changes to run E85. No upgraded lift pump, no upgraded high pressure mechanical pump, no upgraded injectors. Unless you want more than about 400whp.
Oh, and since you guys are discussing GMS1 Vs HPT E85 tunes, here's how my car ran GMS1 Vs a 50% dialled-in E85 tune (watch on the page in hi-def, it's easier to read the speedo):
http://www.youtube.com/watch?v=V154Ow7Z8zI
Oh, and as far as switching, I bought a spare LNF ECM and used that to do my E85 tune. The ECM takes like 10 seconds to swap underhood. I just carry my GMS1 ECM in my trunk so if I ever get fucked and can't find E85, I just run it dry and switch ECMs at the pump when I fill up with 93. Plus, it gets cold in Wyoming during the winter, so I'll switch back to my GMS1 ECM later this month.
09-05-2012, 11:02 AM
#32
Definitely wouldn't need to run full E85 either as the benefits of ethanol can be realized with 1:1 E/gas.
An E tune would be very simple but it would be a whole lot more time consuming than what we've done with the gas tune in order to dial the MAF/fueling in. You would definitely need some new tires though, Hugger.... If you're spinning now, it would be an absolute annihilation of your tires with an E tune.
09-07-2012, 12:05 PM
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As was already stated, nothing more than a different tune to run the liquid gold.
Definitely wouldn't need to run full E85 either as the benefits of ethanol can be realized with 1:1 E/gas.
An E tune would be very simple but it would be a whole lot more time consuming than what we've done with the gas tune in order to dial the MAF/fueling in. You would definitely need some new tires though, Hugger.... If you're spinning now, it would be an absolute annihilation of your tires with an E tune.
Definitely wouldn't need to run full E85 either as the benefits of ethanol can be realized with 1:1 E/gas.
An E tune would be very simple but it would be a whole lot more time consuming than what we've done with the gas tune in order to dial the MAF/fueling in. You would definitely need some new tires though, Hugger.... If you're spinning now, it would be an absolute annihilation of your tires with an E tune.
