Newbie Help with Tuning

gsimpson · 04-16-2007

Hi people,

Well only just getting into this water injection thing, had most of the gear for the last year or so and just purchasing some nice bits from DevilsOwn.

The car is a MR2 Turbo, after market IC, currently running 15psi of boost, last dyno was 279bhp with 304 lb/ft torque.

Okay initially I am going for the 3gph jet and am adding the "adjustable pressure switch".

My question(s) are:

1. At what PSI is it best to set the Water Injection to come in at.

2. I presume a 50/50 Meth/Water is going to be the best setup

3. Any other tips on how I go about tuning this setup, given factory ECU

I may at a later date add on the Progressive Controller.

Many thanks

Graeme

ericp501 · 04-16-2007

bump to this

bruce-m · 04-17-2007

If your keeping to running 15psi most of our customers get it to come in at 12psi,
As for the mix (cant remember who told me) but i was told that on the WRC cars they were finding a 50/50mix was best, anything over that and they werent gaining any more power, infact i think they lost a bit of power? most of our guys run about a 30-40% methanol to water.

As for tuning and setting up you wont beat adding something like an apex-i power fc so you can set up your fueling and timing.

04-16-2007	#1 (permalink)
gsimpson Water Injection Newb Year: 1995 Make: TOYOTA Model: MR2 Turbo Join Date: Apr 2007 Posts: 4	Newbie Help with Tuning Hi people, Well only just getting into this water injection thing, had most of the gear for the last year or so and just purchasing some nice bits from DevilsOwn. The car is a MR2 Turbo, after market IC, currently running 15psi of boost, last dyno was 279bhp with 304 lb/ft torque. Okay initially I am going for the 3gph jet and am adding the "adjustable pressure switch". My question(s) are: 1. At what PSI is it best to set the Water Injection to come in at. 2. I presume a 50/50 Meth/Water is going to be the best setup 3. Any other tips on how I go about tuning this setup, given factory ECU I may at a later date add on the Progressive Controller. Many thanks Graeme

04-16-2007	#2 (permalink)
ericp501 Water Injection Newb Year: 99.5 Make: Audi Model: A4 Join Date: Feb 2007 Posts: 9	Re: Newbie Help with Tuning bump to this

04-17-2007	#3 (permalink)
bruce-m Approved Dealer Year: 1995 Make: Nissan Model: skyline Join Date: Sep 2006 Posts: 83	Re: Newbie Help with Tuning If your keeping to running 15psi most of our customers get it to come in at 12psi, As for the mix (cant remember who told me) but i was told that on the WRC cars they were finding a 50/50mix was best, anything over that and they werent gaining any more power, infact i think they lost a bit of power? most of our guys run about a 30-40% methanol to water. As for tuning and setting up you wont beat adding something like an apex-i power fc so you can set up your fueling and timing. __________________ www.skylineowners.com