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[KingLT1]

Originally Posted by ZEE0HSIX

I have a very similar set of mods, very curious how far you get with the E and a stock pump.

E50 is about max on the stock system @ 11psi with bolt-ons before low side started dropping. Since then He installed a LPE DI pump and JMS booster then upped the boost. Have not had a chance to do any logs yet.

[Megahurtz]

There are a few more changes under the fuel pump tab you can make along with the fuel pump minimum voltage that will squeeze a little more out of the factory low side pump. I was able to tune a Z06 that was dropping to 49psi on E42 up to e55 with the low side staying about 60psi.

You need to adjust a few of the KPA values and duty cycle in the fuel pump tab as well to overdrive your factory low side along with the voltage increase. Doesn't make much sense to increase the voltage past 15.5v though, the cars charging system will never make that much voltage. The JMS system is able to do a much better job. I suspect that with the JMS I could run full e85 on the Z06 with stock pulley but full bolt on. And could probably add a pulley and still run e50.

[JANNETTYRACING]

Originally Posted by Megahurtz

There are a few more changes under the fuel pump tab you can make along with the fuel pump minimum voltage that will squeeze a little more out of the factory low side pump. I was able to tune a Z06 that was dropping to 49psi on E42 up to e55 with the low side staying about 60psi.

You need to adjust a few of the KPA values and duty cycle in the fuel pump tab as well to overdrive your factory low side along with the voltage increase. Doesn't make much sense to increase the voltage past 15.5v though, the cars charging system will never make that much voltage. The JMS system is able to do a much better job. I suspect that with the JMS I could run full e85 on the Z06 with stock pulley but full bolt on. And could probably add a pulley and still run e50.

Agreed except for the full E-85 part you will be out of injector and high side pump.

Or add any pulley and run E-50.

Ted.

[KingLT1]

Originally Posted by Megahurtz

There are a few more changes under the fuel pump tab you can make along with the fuel pump minimum voltage that will squeeze a little more out of the factory low side pump. I was able to tune a Z06 that was dropping to 49psi on E42 up to e55 with the low side staying about 60psi.

You need to adjust a few of the KPA values and duty cycle in the fuel pump tab as well to overdrive your factory low side along with the voltage increase. Doesn't make much sense to increase the voltage past 15.5v though, the cars charging system will never make that much voltage. The JMS system is able to do a much better job. I suspect that with the JMS I could run full e85 on the Z06 with stock pulley but full bolt on. And could probably add a pulley and still run e50.

JMS + LT4 fueling will keep up at E50 with ported supercharger & 2.3 with FBO. You will run out of fuel with full E85 even with the stock pulley and FBO. Full E85 is a entirely different level of fuel system demand compared to E50-E60 and not needed unless you are hellbent on not wanting to mix a few gallons of 93 at the pump when you fill up.

[JANNETTYRACING]

Originally Posted by KingLT1

JMS + LT4 fueling will keep up at E50 with ported supercharger & 2.3 with FBO. You will run out of fuel with full E85 even with the stock pulley and FBO. Full E85 is a entirely different level of fuel system demand compared to E50-E60 and not needed unless you are hellbent on not wanting to mix a few gallons of 93 at the pump when you fill up.

I had a 19 Zl-1 auto here a couple weeks ago with this exact set up it would not tolerate E-50 Even with all the adjustments.

E-30 was in a good place.

I will say that I run .82-83 Lambda though.

I suspect if you ran .88 lambda you could go there but I absolutely will not go that lean.

[Megahurtz]

Originally Posted by JANNETTYRACING

Agreed except for the full E-85 part you will be out of injector and high side pump.

Or add any pulley and run E-50.

Ted.

Originally Posted by KingLT1

JMS + LT4 fueling will keep up at E50 with ported supercharger & 2.3 with FBO. You will run out of fuel with full E85 even with the stock pulley and FBO. Full E85 is a entirely different level of fuel system demand compared to E50-E60 and not needed unless you are hellbent on not wanting to mix a few gallons of 93 at the pump when you fill up.

Originally Posted by JANNETTYRACING

I had a 19 Zl-1 auto here a couple weeks ago with this exact set up it would not tolerate E-50 Even with all the adjustments.

E-30 was in a good place.

I will say that I run .82-83 Lambda though.

I suspect if you ran .88 lambda you could go there but I absolutely will not go that lean.

What about the JMS + Lingenfelter Big Bore LT4 High Side Upgrade + Katech 30%+ LT4 injectors?

The goal would be to run pump e85 which is usually e70-e78 year round here in Florida. Then with a pulley I would think e50 should be doable as long as the low side can keep up.

Agreed on the Lambda. I usually target .83-.84 for stock pulley cars and .82-83 for cars with a pulley.

[KingLT1]

My fuel setup:

LT4 injectors
LPE hpfp
LT4 low side w/JMS

I can run E45 @ a peak of 12psi boost targeting .82-.83 lambda. @ 10psi I can run E60. @ 8psi I can run E80.

Low side is holding fine, I am injector limited. Thinking about grabbing some +30 FIC's, but even on E45 I can still run a decent amount of timing.

[JANNETTYRACING]

Originally Posted by KingLT1

My fuel setup:

LT4 injectors
LPE hpfp
LT4 low side w/JMS

I can run E45 @ a peak of 12psi boost targeting .82-.83 lambda. @ 10psi I can run E60. @ 8psi I can run E80.

Low side is holding fine, I am injector limited. Thinking about grabbing some +30 FIC's, but even on E45 I can still run a decent amount of timing.

I have lots of FIC+30s in stock if that helps.

Ted.

[JANNETTYRACING]

Originally Posted by Megahurtz

What about the JMS + Lingenfelter Big Bore LT4 High Side Upgrade + Katech 30%+ LT4 injectors?

The goal would be to run pump e85 which is usually e70-e78 year round here in Florida. Then with a pulley I would think e50 should be doable as long as the low side can keep up.

Agreed on the Lambda. I usually target .83-.84 for stock pulley cars and .82-83 for cars with a pulley.

I have also run that combo, again it depends on Power level but yes this combo would give you more head room for more E.

I have also done the LPE big bore, DSX Aux pump with +60 over injectors around 800 RWHP.

Ted.

[Ajs16400]

Could you run e85 with with a lt4 conversion on a lt1 if running lt4 injectors, hpfp and low pump with the jms booster?

[Megahurtz]

Originally Posted by JANNETTYRACING

I have also run that combo, again it depends on Power level but yes this combo would give you more head room for more E.

I have also done the LPE big bore, DSX Aux pump with +60 over injectors around 800 RWHP.

Ted.

Thanks for the info, Sir!