GX427

Was wondering of a better way to skip meth and e85 all together I’ve seen these things on YouTube octanium dual additive and BOOSTane octane boosters suppose to bump compression up 8 points. You guys think this would be fine?

ill be on 91 octane and this below 800whp (7-8) should I just have it tuned for 91 and add these in at every fill up? 427 11:1 compression


they also have a race one that adds 23 points so that would put me at 114 octane

CHR89

I personally wouldn't trust it, methanol and e85 have both been extensively used with great success.

GX427

How reliable is the stock c6z fuel pump with a AUX in those power levels I’m seeing everywhere people kill
the pumps with e85

CHR89

Hit and miss, you won't make it there on a stock pump and e85 even if reliability of the pump wasn't a concern.

GX427

Including a AUX I mean that will support it like a and as dual pump

CHR89

I think it will depend more on if you're boost referenced or on the stock lines for that power level on ethanol but I could be wrong. I got rid of the stock pump and went boost referenced with a larger feed + a return when I got away from pump/meth. Not really enough information about your exact setup to be able to tell you more.

Unreal

It isn't a fuel supply issue, it will be an octane issue. You need octane to support 800rwhp, not just fuel volume. That is where meth or e85 come in. Now can you make 800rwhp adding additives, sure, for a bit. But it is far riskier, and costly, and one time you forget or don't add enough, and boom.

CHR89

Agreed, though I still believe he will be close to having a supply issue at 800 on ethanol, but hard to say without knowing how the rest of the car is set up.

GX427

C6 z06 2008 built 05/08 has about 25k Mike’s was planning to do stock pump with a and a dual pump or the dsx zr1 AUX to support 800whp but was afraid of stock pump failing. Do you guys prefer meth or e85 how hard is it to setup up meth I have a used kit but I do not know if I should just buy a new one

CHR89

If you stay on top of the maint. of the methanol system you shouldn't have any troubles, this is true with just about anything though. I however have never really been a fan of methanol. I had a couple of pumps fail on me (2 on the corvette and 1 on a previous car) so I have tried to stay away from it. When the last pump failed I built a "big" fuel system and swapped over to E85. I pass 3 e85 spots on my way to work and who knows how many on my way to mexico so I never have ran into any supply issues. Obviously fuel pumps can fail the same way methanol pumps can fail though in all of the cars I have built I have encountered 1 fuel pump failure. My vote would be to build the fuel system out and put it on e85, though I'm sure others will have different opinions.

grocerygetter

93 octane and meth injection here...I'm all over that power range you are targeting. this combo works fine. I use everything off a stock ECS kit plus I did a z06 pump in tank.

GX427

So you guys don’t think I can get 700-800whp tuned on 91 but add the additives after for safety and not power gains? I’ll be sure to add it all the time

GX427

Bap?

grocerygetter

I think it will need meth injection on top of the 91. I use Alky Control and VP m1. E85 will work but you will need more pump, more injectors, and flex fuel sensor set up...which will also involve some new lines and such while you are at it.

grocerygetter

I use a Z06 pump, ECS BAP, injectors from ECS kit, Alky injection, and a Z06 fuel pump. I'm at about 80 something percent duty cycle and about 6.5 out of 10 on gain on the alky set up. That's though a high stall auto too. so 825-850 at the crank is probably legit with me at 769.x at the wheel.

CHR89

No matter what you do I wouldn’t rely on an in tank additive to make your 7-800whp car to live ever. How can you be sure every bit of it is equally mixed between the two tanks? Sounds like a solid way to burn some stuff up.

GX427

Might go meth and 91 I guess for my base tune and just add in additives after for even more octane. I’m just going to hate to setup the meth kit

CHR89

If you think you hate setting up meth just imagine how much you’ll hate replacing the motor, that will help lol.

GX427

Already am lol I just hate wiring

73DBG

Boosted LS7 guys are gambling enough already, no need to gamble on top of a gamble. You saw what restrictions were needed on my build with factory pump and BAP and what I could do with factory pump BAP and spraying a lot of meth up top, it made a good bit of power but the tune was essential and we put our own restrictions on(6700 rev limiter) because it still wanted to lean out up top even with a dual nozzle kit spraying max meth.

That’s ok temporarily as long as the tune is good and you the owner driver know your system, implement fail safes and stay watching AFR. Not ideal to be meth dependent and in my opinion should only be used as a temporary bridge until the fuel system can be addressed properly.

Don’t gamble borrowed money basically bro...have a plan and stick to the plan.