[IneedAZ]

Question 1: What did your tuner(or yourself) turn your KR sensors up to? I would have thought close as you can to stock is preferred if you are not seeing false knock. Guess i was wrong, my tuner turned them up..think its at 6.5 or 7.5 throughout the rpm range. He said if i had knock it would still catch it, so why turn them up to that if i didn't have any to begin with? I don't know whats considered too high to set them at..i believe the scale goes all the way up to 32.

Question 2: Those that did similar mods to me(Cam, 2650, lower pulley, aux fp, etc), are you running e? If yes, what %? Since my retune the other day and got my Pulse width down from 6.2 to 5.0 i am thinking of running e30 or e40. Not so much for the power gain but for the extra cooling effect. Thoughts?

[KingLT1]

Jeremy knows his stuff...6.5-7.5 is pretty common settings in the LT world. I have seen some tuners set them to 10 and it will still catch knock. As I have previously said in other threads, GM sets these engines up to live off the knock sensors. The LT engines are aggressively timed with over sensitive knock settings so they almost always will show KR even on pump 93.

[IneedAZ]

Originally Posted by KingLT1

Jeremy knows his stuff...6.5-7.5 is pretty common settings in the LT world. I have seen some tuners set them to 10 and it will still catch knock. As I have previously said in other threads, GM sets these engines up to live off the knock sensors. The LT engines are aggressively timed with over sensitive knock settings so they almost always will show KR even on pump 93.

thanks for the reply...I am waiting to here back from him to do the e install. He had to order 2 oem to 8an fittings to connect to the sensor since i cannot use the oem fuel line that comes with most kits. My line was changed when i removed the stock check valve and installed the Lingenfelter high flow valve.

[swisstyphoon]

Originally Posted by IneedAZ

Question 1: What did your tuner(or yourself) turn your KR sensors up to? I would have thought close as you can to stock is preferred if you are not seeing false knock. Guess i was wrong, my tuner turned them up..think its at 6.5 or 7.5 throughout the rpm range. He said if i had knock it would still catch it, so why turn them up to that if i didn't have any to begin with? I don't know whats considered too high to set them at..i believe the scale goes all the way up to 32.

Question 2: Those that did similar mods to me(Cam, 2650, lower pulley, aux fp, etc), are you running e? If yes, what %? Since my retune the other day and got my Pulse width down from 6.2 to 5.0 i am thinking of running e30 or e40. Not so much for the power gain but for the extra cooling effect. Thoughts?

My tuner desensitised them also to around 5.8 - 10.
The previous tuner, had them even up to 13 in certain areas, when I just had the pulley, and no other mods.

I have been told we can not run any E without a big bore hpfp, Injectors, or any other costly fuel system upgrades at our build level.
The low, and high side are close to the limit without E already.
If your lucky I'm guessing E20 because you are around 5ms pw at the moment, but I don't think E20 ist worth the hassle.
You would also need a new tune for all the E tables..

[IneedAZ]

Originally Posted by swisstyphoon

My tuner desensitised them also to around 5.8 - 10 also.
The previous tuner, had them even up to 13 in certain areas, when I just had the pulley, and no other mods.

I have been told we can not run any E without a big bore hpfp, Injectors, or any other costly fuel system upgrades at our build level.
The low, and high side are close to the limit without E already.
If your lucky I'm guessing E20 because you are around 5ms pw at the moment, but I don't think E20 ist worth the hassle.
You would also need a new tune for all the E tables..

I was under the same thought as that is what others have reported. My new tuner seems pretty confident that i can run e30 or 40 in the car. I would be ok with e30..Just looking for a little extra cooling to deal with the Florida heat and humidity. I think e30 would be 5gals of e85 and 14gals of 93. If i remember correctly, my local e85 gas station is around e80.

[swisstyphoon]

Originally Posted by IneedAZ

I was under the same thought as that is what others have reported. My new tuner seems pretty confident that i can run e30 or 40 in the car. I would be ok with e30..Just looking for a little extra cooling to deal with the Florida heat and humidity. I think e30 would be 5gals of e85 and 14gals of 93. If i remember correctly, my local e85 gas station is around e80.

Let me know how much you are able to run.
Might have to look into it as well then ;-)

[IneedAZ]

Originally Posted by swisstyphoon

Let me know how much you are able to run.
Might have to look into it as well then ;-)

ok...i am trying to get him to do it next monday or tuesday but not sure it will. I am thinking an hour for the install and an hour of retuning on the dyno.

[KingLT1]

Originally Posted by IneedAZ

I was under the same thought as that is what others have reported. My new tuner seems pretty confident that i can run e30 or 40 in the car. I would be ok with e30..Just looking for a little extra cooling to deal with the Florida heat and humidity. I think e30 would be 5gals of e85 and 14gals of 93. If i remember correctly, my local e85 gas station is around e80.

Others are likely referring to running full pump E85 which you would never be able to do. There is a Huge difference in fuel system demand at E30 vs E80.

Cooling for what exactly? E85 doesn't add any cooling to the intake charge. on a DI motor the fuel is sprayed directly into the combustion chamber. It is more effective at removing heat from the cylinder during combustion which aids against knock, the ability to run more timing, and coolant temps might not increase as much after a pull. I am all for running E, but just want to clarify what it's benefits will be. If you are trying to cool MAT then you need Alky injection or a Interchiller.

[IneedAZ]

Originally Posted by KingLT1

Others are likely referring to running full pump E85 which you would never be able to do. There is a Huge difference in fuel system demand at E30 vs E80.

Cooling for what exactly? E85 doesn't add any cooling to the intake charge. on a DI motor the fuel is sprayed directly into the combustion chamber. It is more effective at removing heat from the cylinder during combustion which aids against knock, the ability to run more timing, and coolant temps might not increase as much after a pull. I am all for running E, but just want to clarify what it's benefits will be. If you are trying to cool MAT then you need Alky injection or a Interchiller.

thanks for clarifying...I wouldn't do Alky, but had thought about an interchiller over the past few years. Just seems hit and miss though on which brand to choose. Soon as i think i know, someone reports they had an issue. Typically i dont drive the car in the summer months since we get too much rain. I think if i can do the e it would be a nice trade off for the Boostane.

Also forgot to mention the other reason for running e30 or 40 if possible is i would stop using Boostane. I always run it in the car, even when it was stock to help trying to keep it from pulling timing. I typically run 8 to 16 oz at a time. I have a 5gal drum at the house.

[Camaro1973]

Originally Posted by IneedAZ

Question 1: What did your tuner(or yourself) turn your KR sensors up to? I would have thought close as you can to stock is preferred if you are not seeing false knock. Guess i was wrong, my tuner turned them up..think its at 6.5 or 7.5 throughout the rpm range. He said if i had knock it would still catch it, so why turn them up to that if i didn't have any to begin with? I don't know whats considered too high to set them at..i believe the scale goes all the way up to 32.

Question 2: Those that did similar mods to me(Cam, 2650, lower pulley, aux fp, etc), are you running e? If yes, what %? Since my retune the other day and got my Pulse width down from 6.2 to 5.0 i am thinking of running e30 or e40. Not so much for the power gain but for the extra cooling effect. Thoughts?

Mine were doubled with kooks headers, set back to stock with CSP headers @ 21 degrees at the top, no knock.



Your setup is pretty much same as mine. Your not going to be able to run much E at all, maybe E20 which isn't worth the hassle of mixing tbh.

[IneedAZ]

Originally Posted by Camaro1973

Your setup is pretty much same as mine. Your not going to be able to run much E at all, maybe E20 which isn't worth the hassle of mixing tbh.

Wonder what he saw in my logs that makes him think we can run it. He seemed to think e40 was possible. Otherwise i will just stay with Boostane.

[Camaro1973]

Originally Posted by IneedAZ

Wonder what he saw in my logs that makes him think we can run it. He seemed to think e40 was possible. Otherwise i will just stay with Boostane.

With stock injectors and high side already at 800+. No I don't see that happening, surely not safely.


Have race fuel by you? Ive got 2 54g drums in garage now


Boostane is ok. But turns everything orange. I got a case of it I don't use anymore.

[IneedAZ]

Originally Posted by Camaro1973

With stock injectors and high side already at 800+. No I don't see that happening, surely not safely.


Have race fuel by you? Ive got 2 54g drums in garage now


Boostane is ok. But turns everything orange. I got a case of it I don't use anymore.

i usually get the 5gal Boostane when they run the 20 or 25% off with free shipping. I dont have any stations near me that have Race gas. I can get it at a local speed shop though. I think it is more costly than the Boostane though.

I just spoke to the tuner and he was telling me i have plenty of fueling avail still. He was able to maintain 80psi on the low side on WOT. The prev tuner had it falling off during WOT and i was at 6.2inj pulse width and now im at 5.0 inj pulse width.

[Camaro1973]

Originally Posted by IneedAZ

i usually get the 5gal Boostane when they run the 20 or 25% off with free shipping. I dont have any stations near me that have Race gas. I can get it at a local speed shop though. I think it is more costly than the Boostane though.

I just spoke to the tuner and he was telling me i have plenty of fueling avail still. He was able to maintain 80psi on the low side on WOT. The prev tuner had it falling off during WOT and i was at 6.2inj pulse width and now im at 5.0 inj pulse width.

Your low side isn’t the issue. Your injectors and hpfp simply will max out once again when ethanol is added. E30 is I believe roughly 94 octane also. Do you want to add octane for additional protection against knock? Is it knocking now?

If your in Florida , add an interchiller