Morning all ,

Been having a search on here and cant really find the answers im looking for

What needs to be done to run methanol on an 05 UK STi

Current spec is

ECUTEK map
Gt spec headers and up pipe
3" system
K&N induction
Forge Recirc
3 port boost

Isit a case of choosing a methanol petrol mix and getting the car mapped again ? or do i need alot more ?

Jamie

 

Ideally you'd want an ecu that can have switchable maps and then the mapper would put a "Meth Map" in. SIMTEK, ALCATEK, GEMS etc

Having just one map and using meth all the time would not be ideal and a pain in the ****.

 

Basically thats all there is too it, I used to use methanol on a bog standard UK 2000 back in the day.

There isn't much benefits in going above 20% though, so stick to 20% or less.

 

Yea what Mark says is right, its better to have switchable maps so your not stuck having to carry methanol in the boot with you if you go for a long drive.

 

but say i only use the car as a toy .. which i do .. having it mapped on meth and having one map is okay ? what sort of power/reliability am i going to see

 

I used to run a weekend toy on a single meth map setup but it is a PITA every fill up tbh as methanol is proper nasty so gloves and a mask of some sort is a must. You should see a 20ish bhp gain with a 20% mix with your spec I would say but it will be down to the mapper and what he sees as a safe balance at the end of the day.

 

Hi Jamie

Personally I wouldn't brother to have car mapped only on meth,simply is not worth it,yes you can gain 20-30bhp,but don't expect you will have better MPG

Reliability depends,but on yours stock fuel lines can be the problem to run only meth mix and yours fuel lines can be damaged using the meth

Jura

 

My last car was just a weekend toy, I had that mapped for 20% meth.
Best pound for pound mod out there id say, I gained roughly 8% bhp and a huge chunk more torque.
It was never a hassle using it, once you've got a routine its simple.

 

The problem with running Methanol in OEM fuel lines seems to relate to the stripping out of the top coating on the inside walls of the rubber components. This material can block filters and has been known to find its way into injectors, causing lean conditions and general injector malfunction.
However it appears that once this process has been completed after a couple of tanks of Meth mix, everything is ok and you can run as normal.
So run a tank or two of mix, and then change your fuel filter.

I have run Methanol on and off for about 3 or 4 years and have had no problems with it, other than getting the mix wrong once.

As said I wouldn't bother running methanol on a single map car. It would be too much hassle if you ran out of meth on a long journey for instance. However AFAIK you can have 2 maps installed on newage STi ECUs. The second map is generally accessed via the air con button I believe, but you need to speak to a pro mapper to get this confirmed.
Edited to add: thinking about it, this second map facility may just be a boost control option rather than a full independant map. But speak to a mapper.

 

Have you thought about the carberry rom, 2maps, antilag, launch control, flat foot shift, all controlled via switches on in the car.... all for around £450 and then if you run out of meth just switchio mappo and away you goohooo

 

I think the main issue is if the car stands for long periods over the winter etc with Meth in the system as it can attack seals in injectors etc. I was advised to switch to VPower only Map before standing the car for any length of time. I know someone on here hydrauliced an engine due to this.

 

No on UK STI maps,only on JDM WRX/STI cars you can have two fuel maps

On EcuTek 01-05 you can have only 2 boost maps not fuel maps

Jura

 

Yep as I thought

 

There are plenty of people who use a Meth mix as the only map on their ECU's, for both daily drivers and much less frequent use (like mine), with no problems whatsoever.

My car stands for months on end at times and I have no issues at all with Meth on standard OEM fuel lines etc.

Of course there is a slight inconvenience when having to take Meth around with me, but for my mileage it's of no great consequence.

You just need to be careful when handling it, but nothing more than a pair of latex gloves won't sort out. As far as a mask is concerned...... really!? As long as you don't go drinking it or using it as breathing apparatus, you'll be fine. Just be sensible.

I really don't quite understand the "standing" scenario. If you have meth in your fuel lines, you have meth in your fuel lines.... whether the car is standing or not - that's surely irrelevant.

I've been using it 100% of the time (as a 20% mix) for well over a year (periods between use has been up to 3 months) and not had one single problem so far.

 

my next question is where the hell do i purchase it from if i do decide to run it ?

How much should i be looking at per 25l drum ?

 

I believe this is where most members buy theirs...

http://www.jennychem.com/106-methanol

 

As above, Jennychem. The bigger the drum the cheaper it will work out.

I normally buy 2 x 25ltr drums, which total £71 inc. delivery.

 

Up to a 10% meth mix in with petrol you dont need a map..but for full meth gain 20% on a map would be ideal

 

Ignore the above statement, you need a remap if you plan on using methanol. Otherwise it's a moot point using it and at worse your car may run lean.

 

Where did you hear that ???

 

Incorrect.

 

Depending were your based i sell 25lt containers of meth £25 COLLECTION ONLY.
can also do 21litre tubs and larger quantities if required.

Been running a 20% mix for nearly 2 years with no problems

 

Was told by a garage....was also going to try it with that percentage mix when i can get hold it...is this info wrong 10% meth no need to map

 

Sorry i meant i was told 10ltr of meth with full tank of v power i wouldnt need a map especially for it

 

10lt of meth in the tank is more than a 10% mix anyway

And yes, you need it mapping in if using meth. Whoever told you different is a fool.

 

Thanks for clearing that up..i was going to try it...i will gve that a miss then.

 

Good job you didn't try it - on your sized tank, that would have been a 20% (iirc your tank is 50ltr) mix - you wouldn't of had much of an engine left.