NITROUS OXIDE ( nos / n2o ) advice forum

Hi Guys

As well as a couple of other cars I have an MR2 turbo...it runs no intercooler for one reason or another..



At present it has a red 0.7 and a green 0.5 jet on the old style aquamist pump...50/50 ethanol/H20 triggered at 6psi, this provides circa 350cc per min.

Engine is bone stock rev2, it runs 20psi boost on a GT3071R with a link G4 ECU on 880cc injectors at around 60% DC, present power is around 350bhp/350lbft

It has been mapped with the methanol/H20 and also runs 95 octane fuel..very happy with the amount of timing advance we could get from the motor with it setup like this, when we mapped the car I still had the small sidemount intercooler and temps with a single 0.7mm jet was fine and even on an ambient 25c day after 1 hour of repeated mapping runs on the motorway we never saw over 35c degrees

As mentioned the intercooler has now been removed and even with the addition of another 0.5mm injector temps are very high and have been recorded at 90c on my datalog, i hope to get this on video but for now i just have a still image



http://www.youtube.com/watch?v=s6OX4vBXBpA&feature=youtu.be

I have recently ordered a devils own kit (only due to the fact that I couldnt get my hands on an awesome Highpower one )and hope to inject pre turbo as well as using the present kit in its present location, I will update this thread with the findings on the datalog as i go, i am only recording temp just before the TB and I am only interested in reduction of inlet temps at this time.

I thought some of you guys might be interested to see what happens, any ideas as to how much extra H20 I will be able to inject?, will I be able to get down to 30c with H20 alone?

Second kit added.

Twin tanks in the boot, separate one for each kit



The Devils-Own injector will be placed looking into the "eye" of the turbo as close to the impeller as possible doing this is not easy....the best position on offer is firing the injector from the wall of the hose so I adapted some mesh to give me the optimum position, lets hope it stays in place and does not offer too much restriction :0







the injector is just spraying pure water at the moment and hopefully will help lower temps a bit closer to 30c, this injector should flow circa 400cc per min





Air filter in position






After a test drive in cooler conditions that the last test the inlet temp has dropped by circa 40c

http://www.youtube.com/watch?v=dEX08Fos0O8&feature=youtu.be


Ambient temp was 16c, injection trigger point for the Aquamist system (post turbo) was dropped to 4psi, Devils system (pre turbo) was triggered at 2psi and ramps up to max flow at 19psi (boost sensitive progressive system), these kits combined inject a total of 575cc of water and 175cc of ethanol per min

Boost temps were seen to be around 40c, I never saw 50c on the test

I will try removing the Aquamist system and just using the devils own system with multiple jets (pre/post turbo) on a 50/50 mix of ethanol/H20 on the next test, I will also be using 400cc post turbo (50cc increase) and 600cc pre turbo (200cc increase), this will inject 500cc of water and 500cc of methanol