E85 Vs Water/meth Injection

[AngryRB]

Have searched and not found much,

so im interested in going either E85 or water/meth to get my gtx3076 onto some higher boost,

It seems the cost of both is about equal, so what is best? do they both have pretty much the same result?

Im leaning toward the water/meth injection because of the ease and cost of filling up a small bottle with water and methanol but can this still be effective in bringing on boost earlier ( 500rpm)?

My goal would be to keep the tune very safe on stock motor but to improve the area under the graph with as little hassles as possible, also to fry some tyres in second gear on 4000rpm

[TiTAN]

Have searched and not found much,

so im interested in going either E85 or water/meth to get my gtx3076 onto some higher boost,

It seems the cost of both is about equal, so what is best? do they both have pretty much the same result?

Im leaning toward the water/meth injection because of the ease and cost of filling up a small bottle with water and methanol but can this still be effective in bringing on boost earlier ( 500rpm)?

My goal would be to keep the tune very safe on stock motor but to improve the area under the graph with as little hassles as possible, also to fry some tyres in second gear on 4000rpm

water meth doesnt bring the turbo on earlier as its not injecting anything until you are on boost or starting to get on boost, it allows more ignition timing and cools the intake fuel/air mixture meaning you can lean on the tune more.

there is a big thread on it in this section.

[AngryRB]

i was reading it can be set up to the airflow meter , so it could come on even before boost, but even on 2000rpm its starting to boost so by 3000rpm or 3500rpm, would the boost be comming on harder and faster?

its not so much how much boost by when, its also how fast it builds as well , so in that way could it get upto full boost faster ?

[R31Nismoid]

You should really go read the water meth thread, everything you are asking is covered in it.

And no, it wont magically bring on boost 500rpm sooner

[AngryRB]

is there a link to this? how long ago is it?

[Manuel Kasko]

It doesn't make more air go into the turbo so no doesn't bring it on earlier.

Does let you play with timing which can result in some midrange and top end changes

Wouldn't expect it to spool faster though.

Water meth is explained a lot and so is e85

They are both pretty much on par.

So it's just up to what you feel like doing.

One thing I guess you could say is if the meth fails for any reason you can do some damage.

But e85 is safer in that regard.

[Mitcho_7]

If you have access to e85 around you then I would probably be going that route.

Some systems run of IDC, maf voltage, boost but I dont think its going to give you any improvement in off boost performance.

If you set it up to start injecting at like 5-6psi then you might get a little bit more down low, but your turbo will probably build the boost quick enough to not really notice it too much I dont think.

[Manuel Kasko]

is there a link to this? how long ago is it?

Check the last 3 pages in here im sure it is there.

[AngryRB]

ok noted, if i wanted a much stronger mid range my answer is more a rear housing change?

found thread, cheers

[ARTZ]

E85 is heaven for your midrange if you have access to it do it, no questions asked you will love it

[AngryRB]

my tuner said theres still a bit too much varience in pump fuel unless i buy E85 in the 200L drums which is guarenteed 85%, but only thing with this is the constant cost of it,

would i just have it tuned very conservatively incase it gets filled with say 70% at pump so theres no danger? the water/meth seems alot more simpler, just fill a small bottle up ... i know there is some fuel stations not far away with the E85 at the pump..

hmm, tell me what i should do to make this gtx3076 fry the tyres with ease, currently gets a bit loose at the back on 5000rpm, thats too long to wait, i want nasty wheel spin on 4000rpm...

is this the point where i start building an RB30 bottem end?

Edited June 16, 2012 by SliverS2

[ARTZ]

Just buy crappier tyres then..

[Manuel Kasko]

Your doing it wrong haha

My SS1PU hardly holds in 3rd these days

Also why do you wanna fry tires

I can't wait to setup my rears to hold 1st and 2nd boost.

[ARTZ]

Yeah I was gunna say learn to clutch kick, then I read your spec list Mark and the problem is pretty obvious...your clutch is no good..your setup should be good for 350kws dude..how can you expect to get close to that with a 250kw clutch..?

[Manuel Kasko]

350rwkw haha and you can't fry tires

Go buy a clutch dude

Once that's done you won't need to clutch kick at all

[R31Nismoid]

my tuner said theres still a bit too much varience in pump fuel unless i buy E85 in the 200L drums which is guarenteed 85%, but only thing with this is the constant cost of it,

would i just have it tuned very conservatively incase it gets filled with say 70% at pump so theres no danger? the water/meth seems alot more simpler, just fill a small bottle up ... i know there is some fuel stations not far away with the E85 at the pump..

Go find a better tuner.

Everyone else seems to be able to tune accordingly without any issues what so ever.

[scotty nm35]

my tuner said theres still a bit too much varience in pump fuel unless i buy E85 in the 200L drums which is guarenteed 85%, but only thing with this is the constant cost of it,

would i just have it tuned very conservatively incase it gets filled with say 70% at pump so theres no danger? the water/meth seems alot more simpler, just fill a small bottle up ... i know there is some fuel stations not far away with the E85 at the pump..

hmm, tell me what i should do to make this gtx3076 fry the tyres with ease, currently gets a bit loose at the back on 5000rpm, thats too long to wait, i want nasty wheel spin on 4000rpm...

is this the point where i start building an RB30 bottem end?

If your tuner has that opinion of pump e85 then I wouldn't be getting him to do either tune. The safety offered by ethanol is required imo to tune at 300+kw power with a GT30 rear. Yes it has been done but those setups are knock limited, there is no point pushing petrol to that point as the 98 fuel variation will kill it quicker.

Get e85 tuned a little rich and you will be fine on any ethanol fuel, if you are worried just slap a wideband in the dash and add 98 as required.

I haven't done water injection on any of my cars yet although I plan to direct inject water into a spare high compression VQ25 I have here. If you could inject it on the exhaust stroke you would have the steam to help spool the turbo, possibly gaining some response back. Perhaps it could work in the manifold too?

[Mitcho_7]

I haven't done water injection on any of my cars yet although I plan to direct inject water into a spare high compression VQ25 I have here. If you could inject it on the exhaust stroke you would have the steam to help spool the turbo, possibly gaining some response back. Perhaps it could work in the manifold too?

That sounds like an interesting prospect, anyone know much about that?

[AngryRB]

Just buy crappier tyres then..

these are the crappiest tyres i can get lol, at $120 each 245/40 R18's

unless i go back to stock wheels where even a magna can fry them haha

[AngryRB]

Your doing it wrong haha

My SS1PU hardly holds in 3rd these days

Also why do you wanna fry tires

I can't wait to setup my rears to hold 1st and 2nd boost.

cause frying them feels good, lol

but i get your point, 3rd pulls hard and is just about ready to get loose back there so im not complaining about that, the issue is its just 500rpm to 1000rpm too late to be exciting on the road, on a track it would be quite happy and probably perfect for a drift car where it spends alot of time on the top.