Cutting out or stalling after adding wastegate setup. Paxton car

[justinsstang]

Don't know how else to describe it.

Added the 3.33 pulley, K060994 belt, and the beefcake wastegate with 10psi spring.

Did a datalog and without even getting a new tune Lund said he was happy with the log so I didn't get a revision.


This is happening under partial acceleration as well as WOT and scares the shit out of me when it happens, it feels like I just let of the gas and smashed my brake pedal to the floor lol. It comes right back, but it's still freaky and worrying me.

What could be causing it? I don't feel like adding a wastegate can cause that, especially since it's happening at partial acceleration too (3k rpms ish I feel like).
I've never felt belt slip before and thought maybe that's what it was when did it during the WOT pull, but that's not it because once again it's happening under partial acceleration and it wouldn't be slipping there.

The only thing I thought it could really be is not having enough fuel for the added air I should be getting down low, but Lund says the log looks good. Doesn't make sense to me. Adding all that hp/torque down low should need some more fuel. I'm going to reload the tune and see what happens, I don't think it'll do anything though. I'm out of ideas beyond that.




Edit: I've pretty much confirmed that it's happening right at 3k RPM. I just feel like it has to be tune related. Sometimes it does it, sometimes it doesn't do it. I reloaded the tune like I said I would and it didn't change anything. Seems like about a 50/50 chance that it will cut out. I'll datalog and get it to do it and send him it.

 

[LAStang1234]

Only thing I can think of is to verify you have a 10psi spring in, otherwise it must be tune related...?

 

[cyclerick]

Did you have the 3.8 pulley on there before and got 8psi boost? If so, now you're getting 10psi boost so the tune should be revised.

 

[onebadgsx]

if you are on a stock or non return fuel system the tune has to be revised for the added boost.

 

[Blackbeast12]

Dyno tune it, big difference over email tune! My torque booster runs flawless thanks to adam's dyno retune at revolution auto!!!

 

[konablue11gt]

You are in Mt Vernon ..take over to Hargett automotive performance in Evansville and put it on the dyno ..not sure if you are having Lund tune it but they are who Hargett uses to tune mustangs

 

[Puerto Rico 4.6]

Anybody heard about this Boost limiter Valve.....works like a wastegate and its cheaper than a tial wastegate.

http://www.928motorsports.com/parts/boostlimitervalve.php

 

[jp1seattle]

Don't know how else to describe it.

Added the 3.33 pulley, K060994 belt, and the beefcake wastegate with 10psi spring.

Did a datalog and without even getting a new tune Lund said he was happy with the log so I didn't get a revision.


This is happening under partial acceleration as well as WOT and scares the shit out of me when it happens, it feels like I just let of the gas and smashed my brake pedal to the floor lol. It comes right back, but it's still freaky and worrying me.

What could be causing it? I don't feel like adding a wastegate can cause that, especially since it's happening at partial acceleration too (3k rpms ish I feel like).
I've never felt belt slip before and thought maybe that's what it was when did it during the WOT pull, but that's not it because once again it's happening under partial acceleration and it wouldn't be slipping there.

The only thing I thought it could really be is not having enough fuel for the added air I should be getting down low, but Lund says the log looks good. Doesn't make sense to me. Adding all that hp/torque down low should need some more fuel. I'm going to reload the tune and see what happens, I don't think it'll do anything though. I'm out of ideas beyond that.




Edit: I've pretty much confirmed that it's happening right at 3k RPM. I just feel like it has to be tune related. Sometimes it does it, sometimes it doesn't do it. I reloaded the tune like I said I would and it didn't change anything. Seems like about a 50/50 chance that it will cut out. I'll datalog and get it to do it and send him it.

Did you ever figure this out?

 

[kcobra]

Update please?