Just when I thought the mods would stop..... Just when I thought I could give my bank account time to recover....
I have been looking up on the internet about water / meth injection and have a couple of questions.
Do you only use it on track days?
Can you switch it on/off at any time or does it constantly run?
Is it good / better for the engine?
How long would a 1 gallon or 5 gallon tank last?
Is it expensive to keep filling up with methanol?
Sorry for all the questions, its just something I have no idea about. I am just curious if you could use it like NOS, flick a switch and have extra power!
Thanks for any answers in advance!
I run Methanol/Water injection on my Polo, i use the ERL Aquamist kit.
Basically people use it to cool the charged air going into the cylinders to help with pinking/det (when pockets of fuel ignite at the wrong point of the combustion cycle). This will cause power loss and also damage piston crowns and cylinder heads. By injecting water into the charged air going into the cylinders this helps to stop det and in most cases allow some spark advance to be used due to less det and pinking (knocking).
This is not the same as NOS as it alone does not give extra power.
Do you only use it on track days?
Can you switch it on/off at any time or does it constantly run?
No, you run it all the time, there are different set ups you can get, the one i am using is a 1D kit which is activated by a boost switch, basically it comes on when the boost reaches a certain point, i have got mine to come into action when the boost hits 5-6psi.
Is it good / better for the engine?
Its good for the engine, as to how much difference it makes depends on the mods and power you are running, i am running around 180bhp in the Polo which is a 1.3 engine which came out the factory with 113bhp so its extremely useful on a highly tuned engine. There is no reason not to run it as its not bad for an engine but it doesn't give you extra power like NOS does, its a completely different type of application.
How long would a 1 gallon or 5 gallon tank last?
All depends on how you drive, and also how many jets you have fitted, i have got 2 x 0.3mm jets in mine and i use the 5 litre washer bottle to hold mine and it lasts about 2 tank full of fuel, i would expect you to use 0.7mm jets in the S3 due to the amount of airflow the engine uses. i would guess at most you would use a 5 litre bottle every 2 tanks of fuel.
Is it expensive to keep filling up with methanol?
Not really, you do a mix with water, you can't run 100% methanol, the system is for water really as water removes heat better but has no octane so methanol is added for the to increase the octane and also to remove heat, most people use 50/50 mix between the 2, i usually buy a 25litre drum of methanol for £25 and give half of it to my mate who runs aquamist and then fill the drum up with water giving a 50/50 mix.
Hope that helps