Recommended Against Water/meth?

[5ky-lin3]

Hi guys,

My r33 is currently at the tuners getting things together and was also going to have the water meth injection kit installed. However, the tuner has said he is recommending against it as they have had experiences of people on the track with water/meth kits that give the car a shudder mostly when decelerating. My understanding would be that because it is a progressive spray based off boost that it shouldnt be issues like this as long as it was tuned for this?

What do you guys think? Should or should I not have it installed and tuned with the injection kit?

Ps it is a stage 2 kit from snow performance.

[GTSBoy]

Probably not set up properly. Water should shut off as soon as you're off the pedal anyway, meaning that WMI shouldn't be a contributor to anything that goes on during decel.

[BlueRB240]

I never had that problem with mine, I run the Gen 1.5 AEM meth kit. Once I get off the gas it stops spraying because of the map sensor.

[MagicMikeZ32]

With enough vac on lift off, ghetto systems can have water sucked in.

[5ky-lin3]

Thanks guys. Good to hear.

[STATUS]

Should be no issues. 590 plus rwkw on 98 with water meth with no issues and 22000km.

[Ben C34]

As said there is no problem on a properly setup system.

If your tuner has already had issues with one they setup then I wouldn't let them set yours up. Unless they simply had issues tuning someone else's dud setup.

[SABBAi]

A good kit has a solenoid to stop water being sucked in on decel and also dribbling in due to gravity. Most kits that aren't entry level have them.

[MagicMikeZ32]

I was using the snow stage 2 kit also (twin nozzels tho for Z32).

As long as the tank is lower than the nozzels you shouldn't have any issues.

[omnigear]

if you have your check valve close as possible to the nozzle you should be good.

I had Meth then I saw the error of my ways, and saw the light and it is called E85, Praise be the Corn Overlords.

[jet_r31]

f**k checkvalves, would never use a kit with one, solenoids only...

cheers

darren

[jiffo]

Not too many situations where the nozzle is downstream of the throttle plate, usually upstream and therefore no manifold vacuum on deceleration.

I also think if the tuner has doubts, I'd be looking elsewhere. You want someone with a proven track record.