[HDRDTD]

You don't mention what size pulley you're installing so we have no idea how must boot to expect.

[soceur77]

Originally Posted by Infern0

Alright, I'll let the 608 on 93 ride, and go with 637 on E85.

610 on 93 638 on E85

[Getinthur]

So far we got 635 hp on 93, switching over to E85 now. The pulley is 2.30"

[ZL1720]

Originally Posted by Getinthur

Hey guys, tomorrow I take my car to get tuned. When I first got it we did a base line dyno pull to get a good benchmark and we put down 550 HP to the wheels. Since then we added Roto Fab CAI, Flex Fuel sensor for E85, Ported Tony M TB, and Vengeance Racing Upper pulley. What's everyone's guess on the HP we put down? I'll post the graph on Monday. I'm more excited about trying to tune away the torque management then adding the extra power.

Dyno sheet

[SS Camaro Freak]

675 on E

[VAZL1]

Originally Posted by Getinthur

So far we got 635 hp on 93, switching over to E85 now. The pulley is 2.30"

Sweet! What kind of dyno?

[SS Camaro Freak]

Originally Posted by Getinthur

So far we got 635 hp on 93, switching over to E85 now. The pulley is 2.30"

What was the TQ?

Is this SAE? Can you post a graph?

Nice Numbers considering the heat!

[Ron_Robinson1]

Just curious to how this turned out...

[Sooner Cole]

625 on E85, its hot out there!

[Getinthur]

Best numbers we could get was 647 on 93, i didnt get the graph its going to be emailed to me, i have a picture of a pull of 632 hp 643 tq. We werent successful in getting it tuned on E85, apparently the fuel pump starts acting up when it senses the ethanol. My tuner is looking into it. I did a decent amount of research before trying to just install the flex fuel sensor and a few other people mentioned just hooking up the sensor and tuning it. If its not this simple maybe we will go with the Meth injection lol

[ninetres]

Originally Posted by ninetres

Isn't e85 really tricky on these LT4s? Thought there were some fueling concerns of some sort.

Originally Posted by ninetres

I think the way tuners do it, is they tune it on pure 91 (or 93 depending on your state), and then again on pure e85. Then from there, the ecu adjust the fueling based on what's in the tank.

I'm curious how it turns out. I'm pretty tight with a couple of the best, and longest tenure LS tuners in the country. One of them specializes in flex fuel tuning on the LT1 and other late model engines. He said e85 switch on these ZL1s isn't as straight forward due to the fuel system. I THINK the low side does some funny stuff but don't quote me. The ZL1 would definitely take a much larger volume of e85 opposed to an LT1. Maybe that's the issue???

You all ignored my posts

[SS Camaro Freak]

Who was the tune shop?

What Flex Fuel Sensor?

Do you have the graph? Does it have AFR/Boost readings?

TIA

[Getinthur]

Originally Posted by SS Camaro Freak

Who was the tune shop?

What Flex Fuel Sensor?

Do you have the graph? Does it have AFR/Boost readings?

TIA

I haven't received the graphs yet, the sensor was from DSX tuning. I thought, maybe mistakenly, that it was pretty much plug and play. Install the sensor and tune it.....am I wrong?

[wnta1ss]

What does "fuel pump starts acting up" mean? Is fuel pressure dropping? The problem with E85 is that you need to flow ~30% more fuel than you do with gasoline, due to the low heat energy of alcohol. Therefore you'd run into the limit of the fuel system sooner than with gasoline.