MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Performance Modifications => Topic started by: PDT on October 12, 2012, 04:10:55 pm

Title: Methanol injection
Post by: PDT on October 12, 2012, 04:10:55 pm
Anyone on here using it?

Did some testing today on a 135i, with stage 2 mapping it runs 400bhp/400ftlb. With meth it makes 500ftlb and an extra 40bhp, with a less restrictive inlet (coming soon) we expect peak figures of 500ftlb and 470bhp.

Intake temps down by 30 degrees and EGT's 140 degrees lower.

Not bad for a £200 mod  :laugh:
Title: Re: Methanol injection
Post by: james on October 12, 2012, 04:14:31 pm
yea loads of peeps run it here  :happy2:

i run it pure sometimes :evilgrin: norm 50/50
Title: Re: Methanol injection
Post by: Hurdy on October 12, 2012, 08:28:39 pm
Had it on my Polo GTI and soon to be on the Golf R.

Great mod for the outlay. :happy2:
Title: Re: Methanol injection
Post by: Scrubadub on October 12, 2012, 08:37:53 pm
Made my own kit up once with good results then bought a devils own kit
Title: Re: Methanol injection
Post by: sub39h on October 12, 2012, 08:45:43 pm
this will probably be one of the last mods i do purely due to financial reasons and the fact i now live 220mi away from the car and it doesn't get driven regularly.
Title: Re: Methanol injection
Post by: heavyd on October 12, 2012, 09:42:03 pm
Anyone on here using it?

Did some testing today on a 135i, with stage 2 mapping it runs 400bhp/400ftlb. With meth it makes 500ftlb and an extra 40bhp, with a less restrictive inlet (coming soon) we expect peak figures of 500ftlb and 470bhp.

Intake temps down by 30 degrees and EGT's 140 degrees lower.

Not bad for a £200 mod  :laugh:

Nice figures Dave, hope youre not going to push that car too far as I want to buy it off you one day :laugh:
Title: Re: Methanol injection
Post by: berg on October 13, 2012, 08:54:55 am
Anyone on here using it?

Did some testing today on a 135i, with stage 2 mapping it runs 400bhp/400ftlb. With meth it makes 500ftlb and an extra 40bhp, with a less restrictive inlet (coming soon) we expect peak figures of 500ftlb and 470bhp.

Intake temps down by 30 degrees and EGT's 140 degrees lower.

Not bad for a £200 mod  :laugh:


any downsides/risks Dave in your opinion?
Title: Re: Methanol injection
Post by: PDT on October 13, 2012, 09:28:00 am
I have waited and watched loads of kits being fitted to the same engines in the USA, so far no major component or engine failures reported. As long as you have a flow meter to monitor things and pull out boost and timing if meth stops flowing, all seems fine. 
Title: Re: Methanol injection
Post by: h4rdy on October 13, 2012, 09:51:31 am
Its hardly a £200 mod is it?

£300 for a decent kit and quite a bit on fitting costs as a lot of trim has to be removed to get the controller in and setup time, say £250.

Oh an you'll need a spacer from INA at £75 to protect the plastic on the TB.

But what a mod, I'm going for it next year.

With V Power your looking at an octane rating of 109?

Like you say cooler intake temps, like driving on a cold winters morning every day.
Title: Re: Methanol injection
Post by: PDT on October 13, 2012, 10:15:37 pm
buy the kit from the USA, then its a £200 mod. Its nothing more complex than a high pressure water pump, pulse solenoid and a simple boost vs flow controller.
Title: Re: Methanol injection
Post by: scopes on October 13, 2012, 11:27:35 pm
What kit would that be?
&
Where from in the USA?

 :happy2:
Title: Re: Methanol injection
Post by: h4rdy on October 14, 2012, 08:00:27 am
buy the kit from the USA, then its a £200 mod. Its nothing more complex than a high pressure water pump, pulse solenoid and a simple boost vs flow controller.

What's the point of going cheap when you can get the AEM kit for £300.

Do you really want to risk a failure when you have mapped up to it on settings 9-9-9 :scared:

With the AEM you can use one of the wires to cut the N75 if you run it of water/meth so it defaults to waste gate boost.

You really need that spacer too, to protect your throttle body.

I personally think its best to spend a little more.

Title: Re: Methanol injection
Post by: Janner_Sy on October 14, 2012, 08:18:42 am
I spoke to Keith@APR before buying mine and he recommended against buying any of these all singing all dancing "adaptive and progressive" WMI kits, because the ECU has to permanently try and adjust fuel trims etc trying to second guess the WMI controller as it alters its flow rates throughout the rev band.

He recommended to install a simple "basic boost operated" setup, so i bought the Devils Own Base kit(6-30)psi which including delivery and 4 quarts tank came to £257.
Title: Re: Methanol injection
Post by: PDT on October 14, 2012, 08:33:17 am
buy the kit from the USA, then its a £200 mod. Its nothing more complex than a high pressure water pump, pulse solenoid and a simple boost vs flow controller.

What's the point of going cheap when you can get the AEM kit for £300.

Do you really want to risk a failure when you have mapped up to it on settings 9-9-9 :scared:

With the AEM you can use one of the wires to cut the N75 if you run it of water/meth so it defaults to waste gate boost.

You really need that spacer too, to protect your throttle body.

I personally think its best to spend a little more.




I looked at various kits but the CoolingMist kit I chose uses very high quality components and has proven that it deserves its place in the market.

http://www.coolingmist.com/
Title: Re: Methanol injection
Post by: jon-tfsi on October 14, 2012, 12:08:34 pm
Have you got any before and after graphs Dave? To show the increases across the rev range?

If someone was to run the meth all/most of the time is it worth upgrading the intercooler on a mk5 GTI as well?
On the US forums a couple of years ago a few were fitting the snow kits and using the washer reservoir asthe tank. I didnt keep an eye on the long term outcome. Have you heard of this being done or wouldyou not recommend it?
Title: Re: Methanol injection
Post by: Janner_Sy on October 14, 2012, 12:43:02 pm
Dave, i presume you mapped the car to get those gains, or is that literally from bolting it on?
Title: Re: Methanol injection
Post by: h4rdy on October 14, 2012, 07:34:11 pm
I think James rr'd at 398bhp with 2+ Ko4. :scared:
Title: Re: Methanol injection
Post by: MC71 on October 14, 2012, 07:52:46 pm
One day for me, bang for bucks it's worth every penny.  :happy2:
Title: Re: Methanol injection
Post by: PDT on October 14, 2012, 09:07:09 pm
Dave, i presume you mapped the car to get those gains, or is that literally from bolting it on?

Yes, it runs on a specific 'meth' map with extra boost (13psi stg2 upped to 17psi on meth) the meth only sprays at high load when under higher boost values.

I'm using the washer tank as a reservoir with 50/50 meth mix. In short squirts it also leans the windows very well. Most high quality winter screen washes have around 40% methanol in them.

I will dyno it in stg2, then stg2 with no extra boost and stg2 with the extra 4psi and post the results.
Title: Re: Methanol injection
Post by: gazon69 on October 15, 2012, 08:35:46 pm
Ha just seen this. Just finished fitting mine tonight. Gonna see whats what tomorrow after work.  :driver: