what would the part number be for a stage 2 wastegate for a 2004 srt-4

my brother in law has an 04 and hes boosting 18psi (bought the car used) as far as i can tell no stage upgrade but the wastegate is a t07571 the number on my factory wastegate was t07572 its an 05 what do you guys think

 

Just look at the arm on the wastegate, if it has a screw, then its the S2WGA. Any other WGA would stick out like a sore thumb because its not round like the Mopar and stock one and it would probably say the brand name on it.

If not then there may be an MBC or something in the engine bay. If you don't see that either, then make sure the gauge is working right.

 

see i was wondering about the gauge because the wastegate is round but its not smooth like my stock one it kind of has like scratch marks down it but it was made like that, as far as the gauge it idles at 20 vac but if he hits the gas real quick in neutral then it goes to 0 of course and then goes almost down to 30 vac when it boost up to 18 it vibrates a little but not much

 

Well what does the gauge sit at when the cars off? If it sits at anything other than 0, its broken.

Stock WGA:



S2WGA:


They look identical. Ill go outside and see what my part number says Ill post back in a sec

 

Okay heres a better picture:



And your part numbers:

 

the part nuber is t07571 on it and it does look like that now on your stock wga is it smooth or the scratch look like the close picture you showed his is the scratch look and my stock one is smooth ill ask where his boost gauge sits. thanks

 

If his part numbers dont match the ones on the back plate of the wastegate I posted...then its doubtful its an S2. Check for the arm with the adjustment: