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Little Background. I have a Stage 3 Mini running a JMTC E45R K04 Turbo. It came with an upgraded diverter valve already installed on the turbo. So it literally was a direct swap when I swapped my turbo. Been on stage 3 for a while now running around 22psi. Today I was doing a real nice powerful pull peaking at 22psi then all of a sudden my boost pressure dropped to 8-9psi. I am doing more pulls and my peak boost now is 10.5psi. I've checked my hoses and they are fully connected. The system is still able to do 10.5psi so I don't think it can be an issue with the connections of the hoses. The second it happened I instantly felt like it was a diverter valve failure. No check engine lights, just a significant drop in boost pressure. What do you guys think?
It was I. Still trying to hunt these two very frustrating codes! I thought it was the meth jet elbow but that was not it. Had both the high and low pressure fuel pumps replaced lately, thought that was it, no dice!
It was I. Still trying to hunt these two very frustrating codes! I thought it was the meth jet elbow but that was not it. Had both the high and low pressure fuel pumps replaced lately, thought that was it, no dice!
One my second forge valve. Been back on stock for a month or so, same issue.
Lots of people get check engine lights with the forge unit simply because they are running the wrong unit. Is yours for the N18? I heard someone running a N14 forge unit on an N18 and couldn't figure out the check engine light. Vice versa.
Does your model match with the N18 one?
EDIT:
LOLOL. Scratch all that. Didn't read hard enough. I see that you went back to your stock one and you still have the same issue.......
When you clear the code on stock it still comes back right? ..
Last edited by johntotah94; 12-25-2014 at 11:55 AM.
Reason: Didn't read properly
Got a yellow half engine light but no CEL. Always triggered while on the highway and would go away if I restarted the engine. Carly had codes 2C90, 2C57, 2C91. In hindsight I actually heard the problem a week or two before the car acknowledged the problem. The turbo would just keep spooling when I hit the gas making an exaggerated high pitch sucking noise forever with weak acceleration. After replacing the diverter valve with a new stock one the engine has pull again along with the turbo sounding correctly. About 25,000 miles on Manic Stage 1 and 77,000 miles total. I pretty much always run map B.