Over-boosting MCX 190 Viper sea level!!!

[Tunepipe]

Hello everyone, like the subject says, installed MCX 190 on a 2015 Viper, 1000kms on unit, boost pushes over 8 PSI, anyone getting the same issue ??? Anybody here running an MCX 190 at sea level ??? Played a bit with wastegate rod <lenghtened> but still too high boost...help.

 

[CustomApexMan]

Where is your boost gauge sencor/reference point it will read high if not on the engine side of the throttle plates. It could also be the altitude bypass compensater located on the turbo with the 2 wire plug

 

[Tunepipe]

Boost gauge is connected with a T fitting to the intake manifold. As for the 2 wire altitude compensator is there any way to test this ??? We have 3 kits on the go and all are over-boosting, and now 1 of them blew up. So I'm sure my boost readings are pretty accurate (too high). Thx

 

[CustomApexMan]

The compensater bleeds pressure off that the waste gate sees so if you put a hose straight from the compressor housing to the wastgate you would be at the lowest opening pressure the wastegate would allow. Or just take the two hoses off the compensater and connect them together

 

[Tunepipe]

Yes...I read about connecting both hoses and this should drop boost , will try this tomorrow. But is there another solution you think ? Or should I use this "bandaid" fix ? Thx for you input. I'll fill you in tomorrow night on my testing.

 

[CustomApexMan]

Mine is right on 15.5lbs at 1000 ft. 15lbs at sea and they rough at .5lbs per 1000 ft

 

[Tanker Yanker]

Mine is right on 15.5lbs at 1000 ft. 15lbs at sea and they rough at .5lbs per 1000 ft

I have the MCX190 and is set at 6.5lbs at 2000 ft.

 

[Tunepipe]

bypassed solenoid directly, still too much boost, MCX canada will change the map, sent out boxes for re-map, praying this works.

 

[CustomApexMan]

With the solenoid bypassed the only thing that controls the boost level is the wastegate. Mabey they have 8lb wastegate installed instead of a 6lb

 

[john ca 99]

Hello everyone, like the subject says, installed MCX 190 on a 2015 Viper, 1000kms on unit, boost pushes over 8 PSI, anyone getting the same issue ??? Anybody here running an MCX 190 at sea level ??? Played a bit with wastegate rod <lenghtened> but still too high boost...help.

hi I would like to no how you made out with this over boost I have mcx kit on order not sure I want to fight with that as soon as I install thanks

 

[Tunepipe]

Sure will john ca 99

 

[john ca 99]

you probably do have high boost wastegate spring

 

[Tunepipe]

Nope. Manually checking it opens at 4psi. But still over-boosting.

 

[john ca 99]

Nope. Manually checking it opens at 4psi. But still over-boosting.

is arm binding as its opening

 

[Tunepipe]

Not sure. Waiting for re-program from mcx-canada. Will do more testing then. Will let you know ASAP