[LibertyHill]

I never liked nitrous, and I'm still reluctant to add a second source of fuel, but I can't imagine a more suitable setup than this FI DI engine out of fuel, and with a huge cost involved in taking the next step to upgrade that fueling. And especially when that next step has been found still lacking in providing enough fuel to fully support E85. Meth is under half that fueling upgrade cost.

Additional benefits are the charge air temp reduction, addition octane>timing available, and valve cleaning effect.

It sounds like a no-brainer to me. Why don't we see more cars running FI + meth on this forum?

[BravoMyles]

I'm curious as well. I likely will eventually on my car. My cam doesn't have an increased fuel lobe and it seems like a logical choice to add meth as opposed to a cam swap or pump/injectors. I mean, eventually I'll probably swap to a better cam, but I could stick with mine now and just run meth for added fuel.

[1LE801]

I'm a believer! Too many positives not to run it IMO....

[SSFanboy]

I'll start with the reason why I've decided to upgrade to the LT4 fuel components over meth:
- High Maintenance: I don't want to mix methanol with distilled water, clean nozzles, or if using a high concentraton of methanol, regularly fill a container with a flammable liquid from anything other than a gas pump.
- Long-term cost: A 5-gallon pail of pure methanol is $80-$90. I could purchase a 55-gallon drum of methanol and get it cheaper, but who wants to store that in their garage? I plan on keeping my vehicle for a while so I figure upgrading to the LT4 high and low-side pumps + injectors is cheaper in the long run. Now if I throw in a CAM + all other components that typically go with that, we're talking major $$$...so I'm re-thinking this argument.
- Reilability: I know many kits come with fail-safes, flow guages, and reliable pumps, but that's one more set of components to worry about. With any concentration higher than 50/50, I'd have to worry about corrosion leading to leaks in hosing or storage containers. I suppose I could take precautions by using stainless steel lines and some type of race tank for in-vehicle meth storage.

I'm not gonna lie, there are some definite PROS that have tempted me:
- HP Monster: The horsepower gains can be phenomenal with the right tune and when combined with FI, higher compression, and smaller SC pulleys.
- Cleaner valves: No need for my catch can
- Lower IAT: Not really a concern with my Maggie and its awesome intercooler, but if I keep modding and decide to track the car, water/meth injection may be very helpful after multiple runs or after heat soak.
- Less chance of knock if you want to significantly increase boost...or so I've heard.
- Massive TQ curves: Already got that with my Maggie but still impressive if you've got slicks to put it down and ZL1 axles to keep it down.

[ADM PERFORMANCE]

Originally Posted by SSFanboy

I'll start with the reason why I've decided to upgrade to the LT4 fuel components over meth:
- High Maintenance: I don't want to mix methanol with distilled water, clean nozzles, or if using a high concentraton of methanol, regularly fill a container with a flammable liquid from anything other than a gas pump.
- Long-term cost: A 5-gallon pail of pure methanol is $80-$90. I could purchase a 55-gallon drum of methanol and get it cheaper, but who wants to store that in their garage? I plan on keeping my vehicle for a while so I figure upgrading to the LT4 high and low-side pumps + injectors is cheaper in the long run. Now if I throw in a CAM + all other components that typically go with that, we're talking major $$$...so I'm re-thinking this argument.
- Reilability: I know many kits come with fail-safes, flow guages, and reliable pumps, but that's one more set of components to worry about. With any concentration higher than 50/50, I'd have to worry about corrosion leading to leaks in hosing or storage containers. I suppose I could take precautions by using stainless steel lines and some type of race tank for in-vehicle meth storage.

I'm not gonna lie, there are some definite PROS that have tempted me:
- HP Monster: The horsepower gains can be phenomenal with the right tune and when combined with FI, higher compression, and smaller SC pulleys.
- Cleaner valves: No need for my catch can
- Lower IAT: Not really a concern with my Maggie and its awesome intercooler, but if I keep modding and decide to track the car, water/meth injection may be very helpful after multiple runs or after heat soak.
- Less chance of knock if you want to significantly increase boost...or so I've heard.
- Massive TQ curves: Already got that with my Maggie but still impressive if you've got slicks to put it down and ZL1 axles to keep it down.

Took the words right out of my mouth. I read on Facebook recently a newly installed METH System stuck on for no apparent reason,until the problem was diagnosed. The fix was to use "FLEXSEAL" to seal the box full of electronics. Really!

The problem is that he manufacturers of these kits are using subpar components with no safety behind them or Logic.

Methanol as well as e85 is highly corrosive(People that use it know) and can give Aluminum and Steel parts a short lifespan as it effects it metallurgy with time causing tolerances to no longer be within spec. This in turn leads to failed parts. The more you use the faster they fail. JUST LIKE DRUGS DO TO HUMANS

My .02

A quote from flexseal website under q&a -
Q: Can I use Flex Seal® to fix radiators, tires or other areas with extreme heat and pressure?
A: NO, Flex Seal® will withstand your normal water pressure but it's not made to withstand extreme heat or pressure.

[laynlo15]

I'm deff on the fence about this also. I'm thinking maybe it would just be best to have 2 tunes, one with a pulley change and race gas for the track and one for the street for 93 instead of messing running the meth. The pulley and a reflash takes less then an hour if you have hp tuners as I do. I'll be drag racing a couple times a month once our tracks open and I don't need 600 rwhp on the street, but want it at the track.

[1LE801]

Just don't buy a cheap kit. It's no different than anything else. You get what you pay for.

E85 is great but it's not cheap to switch to and the pump E85 has been proven to be nowhere near E85. Availability is more scarce and E85 doesn't clean or cool like Meth. It also is far less efficient meaning more fuel needed meaning more money spent.

To each their own but a GOOD Meth kit is a hard to beat.

[SGDM]

You open a whole new can of worms with Meth, not the cooked kind. What do you want from your car? Is it a DD, weekend track/strip car that you haul on a trailer. Crap fellas...these FI cars are pushing 600 now on stock fuel system and pump gas! You have to use extreme caution using meth, storage, mixing, tanks, lines, etc. I have seen cars running meth get a leak or pop a line. You will be lucky to get out. Just sayin.

[parish8]

You do use more e85 than gas but here it is much cheaper than premium. The actual cost per mile drops with e85. The e85 at my local station has tested between e73 and e88.

Meth is also cheap here. Something like $2-3/gallon.

I think meth is great if your looking for that next 100-200hp or so over what your current octane or fuel supply will give you. I know I will want more than that eventually so I am working toward port injected e85.

[ADM PERFORMANCE]

Originally Posted by laynlo15

I'm deff on the fence about this also. I'm thinking maybe it would just be best to have 2 tunes, one with a pulley change and race gas for the track and one for the street for 93 instead of messing running the meth. The pulley and a reflash takes less then an hour if you have hp tuners as I do. I'll be drag racing a couple times a month once our tracks open and I don't need 600 rwhp on the street, but want it at the track.

This is exactly why we sell HPTUNERS and EFI LIVE Autocal

[SGDM]

Originally Posted by laynlo15

I'm deff on the fence about this also. I'm thinking maybe it would just be best to have 2 tunes, one with a pulley change and race gas for the track and one for the street for 93 instead of messing running the meth. The pulley and a reflash takes less then an hour if you have hp tuners as I do. I'll be drag racing a couple times a month once our tracks open and I don't need 600 rwhp on the street, but want it at the track.

That is my plan.

[wnta1ss]

For those who are going the meth injection route, do not allow the tank to run out. I have seen an engine blow because of that mistake (not my own).

[LibertyHill]

Originally Posted by parish8

I know I will want more than that eventually so I am working toward port injected e85.

I am not sure I would, but everyone probably feels that way initially after a big HP upgrade.

Thought about this too thanks to Goertz. I wonder if the LT4 adapter plates are thick enough for injectors, or if additional plates between the PD blower and heads could be used? It would be nice if the injectors could be hidden under the blower too but I'm not sure how much room there is.

Whats the best option to address fail-safe? It seems a solenoid to dump boost would be best since we can't pull timing without an aftermarket ECU right?

I searched and can't find much on alcohol damaging metal. I actually found more suggesting it could actually improve the life of a blower but most info is slanted pro-meth to support sales of course.

[Ian SS]

Originally Posted by 1LE801

Just don't buy a cheap kit. It's no different than anything else. You get what you pay for.

E85 is great but it's not cheap to switch to and the pump E85 has been proven to be nowhere near E85. Availability is more scarce and E85 doesn't clean or cool like Meth. It also is far less efficient meaning more fuel needed meaning more money spent.

To each their own but a GOOD Meth kit is a hard to beat.

So many things wrong with this post.

The cost to switch to e85 is simply the cost of whatever a tune would cost you, which you would be paying anyway if you went with a meth setup. You can literally drain the tank, fill up e85, and tune the car. No other costs involved.

Any additional costs involved with e85 is if someone elects to use a Flex Fuel system, in which case you can budget another $400. This is purely optional and NOT required to run e85.

The costs at the pump are a wash. The car uses 30% more fuel but also costs on average a $1/gal less at the pump. 91 here is $3.10 and e85 is $2.00.

Also my local pumps both have over 80% ethanol content.