Meth problems again

[muztangman93]

When first starting the tuning on my car it started running like crap go wot and it wen full rich maf just went crazy. It ended up being when I pulled my maf out it was covered in rust and still wet with meth on it. Tuned the car without it running great. I relocated the nozzle to a spot that another person is using with a similar setup. Its been hot so I hooked it back up only made a hand full of spirited drives with it hooked up and it was fine. Yesterday on the dyno first pull smooth as silk. 2nd pull it had just a tiny hiccup down low barely noticeable. Well took it out tonight got on it in 2nd for just a second it spun tires so I let out. Few minutes later I hit it in 2nd again and it starts missing. Instantly Im thinking plug but I didnt get to see the wideband so I hit a country road and watch the wideband go wot and it goes full rich. Drive home pull maf and its covered in rust and meth again. I really want to run it to help with heat issues. What the heck is going on. I have it set to come in at 7 psi and go full spray at 14

 

[Steedman07]

Where is the nozzle located and where is your MAF?

 

[muztangman93]

Its in the tube before the throttle body and the maf is in the log straight tube that connects to the tube the nozzle is in.

 

[05stroker]

Odd to see this posted, I had the same issue last weekend at the track and we are mounted in the same spot. Hmmmm

 

[retfr8flyr]

I'm not any expert on Meth but this is what I think is happening. When you are into boost and shut it down quickly, the meth controller doesn't react quickly enough and is still spraying when the throttle closes. The causes blow back onto your MAF and screws it up. Your sig says Stage 2 but not the brand, which kit are you running?


Earl

 

[Steedman07]

Its in the tube before the throttle body and the maf is in the log straight tube that connects to the tube the nozzle is in.

Is the meth spraying before or after the MAF?

 

[05stroker]

He sprays like I do, post maf, but with the Procharger setups we have the nozzle can drain back onto the maf sensor. I have check valves in my nozzles, but still am having this issue.

 

[Steedman07]

He sprays like I do, post maf, but with the Procharger setups we have the nozzle can drain back onto the maf sensor. I have check valves in my nozzles, but still am having this issue.

That sounds like his problem then. He should move the nozzle away from the MAF but before the IAT sensor..

 

[05stroker]

Its not that simple with our setup. With the location of the maf, any place between he maf and tb will drain back on the maf. The maf could be moved to the outside of the tube, but that may not solve it either since the water would still drain into the pipe. The main thing is why is it draining back with check valves that are working? Well this last weekend I removed mine several times after making passes at the track and each time the check valve was closed and there was still water between the valve and the nozzle. When the car is parked and restarted there is water there to drain back onto the maf. I have been fighting a issue when I first leave the house for a few min. Like the cops where breaking up. Turns out it is this issue. I am thinking of moving my nozzles to the top of the tube so anything left in the nozzle after the vlv is shut will drain right away while there is still a good bit of air flowing.

 

[muztangman93]

So youve seen the same problem then. Before mine would be good on the first wot for datalogging then each time after it would get worse by 3rd time instantly it fell on its face. I would think there should be enough air flowing to pull it all into the throttle body. Im not a racer and dont like to go extremely fast if Im on a wide open smooth road and nobody is around I will lay into it somtimes just to feel the initial power almost always shut it down by 100mph rarely go over that. Im wondering if its not that fact that theres so much pressure that when the bov opens up it pulls the left over right on top of the maf then it lays in the pipe and constantly gets thrown over the top of it. I guess I could put it in the intake but I dont think that would be a very good idea for distribution purposes.

 

[muztangman93]

Also its a snow kit but have a devils own progressive controller

 

[07Bossman]

Can either of you guys post pictures. Your description is confusing.

 

[cmg427]

Is there any other options on where to spray? Behind the throttle body? Somewhere in or under the intake manifold?

 

[ILW84U]

I had a similar problem with mine. I thought it was a faulty solenoid so I replaced it & everything seemed to be fine. It wasn't long after that I fried 2 built motors & gave up so I don't the long term results but you guys got me thinking. Maybe the solenoid should be positioned below the nozzle level so the meth can't drain down what is left in the lines between the solenoid & the nozzle? It might be worth a try.

 

[muztangman93]

Mine has a check valve. no solenoid. Ill take some pictures in a bit

 

[lostsoul]

some hard core bad azz named lostsoul did an extensive write up on meth install and testing. Also try a new nozzle.. maybe the tip is F'ed up and not atomizing right.

 

[muztangman93]

Ill see if I can find your write up. Ive checked it and it atomizes really well

 

[05stroker]

Mine is a AEM setup with dual nozzles and check valves in the nozzles.

 

[sportinawoody]

can you mount them in the intake behind the t/b but still in the neck ? just a thought

 

[muztangman93]

I would think a guy could but I also think that it would get less to the front runners then the rear runners. Now I think more gets into the front ones then the rear ones.