[Boost or bust]

Originally Posted by Sixgunsled

I'm not sure how much hp increase you will gain over a 93 tune with e60. Will vary depending on mods. I know guys who are running N/A going from 93 to e85 are making pretty significant jumps in HP.

California 91: RWHP 550
E85: RWHP 620

All stock. Just 50% e85 in the tank. Sneaky, fast, easy.

[KingLT1]

Originally Posted by KingLT1

Damn it!!

Just remembered that this topic came up a while back about the FIC injectors where another members assumed the same thing. Damn fine print!! lol

[oldman]

My problem with all of this is I just don't know if it is worth the money per HP for E60 to E85. Say I'm happy with 7 PSI D1X, is it a waste to look to running E60 plus. I guess since I already have a cam 32% fuel and it is being tuned with it, I already have an E85 sensor, installed, I would have to install my LT4 HPFP, buy a set of LT4 injectors, pay for a retune and then dyno 93 bs E60 vs E85. What if it comes to zero HP? I've asked and there seems to be little opinion and even less actual data on gains going to E60 to E85 from 93. Much more is know IMO on the NA side. Any vendor would speculate on gains from 7, 10 and 13 PSI going from 93 to E60 to E85?

I was one of the first on the E85 FBO crowd and I know it works NA, but is it worth at boost, surely there is a sweet spots say 10 PSI or more, who knows. I guess I can call Pray and say OK, I'm buying a set of injectors and installing the lt4 pump, need to start all over again on tune.. his hair might catch on fire.

[JANNETTYRACING]

Originally Posted by oldman

My problem with all of this is I just don't know if it is worth the money per HP for E60 to E85. Say I'm happy with 7 PSI D1X, is it a waste to look to running E60 plus. I guess since I already have a cam 32% fuel and it is being tuned with it, I already have an E85 sensor, installed, I would have to install my LT4 HPFP, buy a set of LT4 injectors, pay for a retune and then dyno 93 bs E60 vs E85. What if it comes to zero HP? I've asked and there seems to be little opinion and even less actual data on gains going to E60 to E85 from 93. Much more is know IMO on the NA side. Any vendor would speculate on gains from 7, 10 and 13 PSI going from 93 to E60 to E85?

I was one of the first on the E85 FBO crowd and I know it works NA, but is it worth at boost, surely there is a sweet spots say 10 PSI or more, who knows. I guess I can call Pray and say OK, I'm buying a set of injectors and installing the lt4 pump, need to start all over again on tune.. his hair might catch on fire.

We see 50-75 RWHP gains with boost between 93 and E-60-E-85

[PackersFan26]

ridiculous that 12k has to be spent to get to a mere 700hp. my god

[KingLT1]

Originally Posted by PackersFan26

ridiculous that 12k has to be spent to get to a mere 700hp. my god

Only if you want E85 and no meth. Pump 93 it can be done for way less.

[Inkedmongo]

Originally Posted by KingLT1

Only if you want E85 and no meth. Pump 93 it can be done for way less.

What about on pump 91? I'm talking myself into going into recession mode on my build some days, then others just taking my time gathering the long list of what I need to do my build to plan.

[KingLT1]

Originally Posted by Inkedmongo

What about on pump 91? I'm talking myself into going into recession mode on my build some days, then others just taking my time gathering the long list of what I need to do my build to plan.

91 octane is good for 580whp with stock fuel system according to Whipple. LT4 fuel setup and JMS BAP supposedly adds another 100hp of headroom. I would error on the conservative side because there seems to be some variance from car to car.

I am not planning on installing my build till late fall... hoping some better options come about by then at a more reasonable cost.

[Inkedmongo]

Originally Posted by KingLT1

91 octane is good for 580whp with stock fuel system according to Whipple. LT4 fuel setup and JMS BAP supposedly adds another 100hp of headroom. I would error on the conservative side because there seems to be some variance from car to car.

I am not planning on installing my build till late fall... hoping some better options come about by then at a more reasonable cost.

I guess I will pursue my plans of e70 and meth injection. I agree, the cost of fueling options for our cars feels like modern day extortion.

[oldman]

Originally Posted by JANNETTYRACING

We see 50-75 RWHP gains with boost between 93 and E-60-E-85

Thanks more than I thought. One more question just to put the topic to bed:

max reasonable RWHP supported by: LT4 setup and 32% cam lobe on E60 is 650ish as measured CF = 1.0.

[JANNETTYRACING]

Originally Posted by oldman

Thanks more than I thought. One more question just to put the topic to bed:

max resonable RWHP supported by: LT4 setup and 32% cam lobe on E60 is 650ish?

It is around 745 RWHP. results may vary.

[oldman]

Originally Posted by JANNETTYRACING

It is around 745 RWHP. results may vary.

So it would seem that I should finish my build for E60: LT4 setup, flex fuel, and a 32% cam lobe. Pray spec my low boost setup for 707 RWHP. I just was not sure if I could do it on the "cheap", meaning no $3500 DI injectors or secondary injectors/meth spray. After the pistons go in, I'll just keep stepping the pulley size down on my D1X till I hit 707 on E60... probably a 4.0 pulley (already have it, sitting in a box).