15 psi???????

[oskinosmee]

Ok i was driving earlier and i decided to open her up and i did. I got a loud backfire and a lil smoke which i thought was normal and i kept going. So i arrived where i was going checked my exhaust tip and it was black, now when i gas it i only get to 15psi no higher. Also i hear my wastegate opening i think. I had it set to 18psi with a MBC, it would spike to 21psi a fall. Whats wrong?
Thanks in advance Steve

[oskinosmee]

I checked again but nothing. i can turn my MBC either way and i still get nothing.
WTF?

[bykeryder4life]

something from the stock EBC is still connected and taking control of your boost levels? or maybe a boost leak or something? how long has the MBC been on the car?

[oskinosmee]

Months it just happened today

[bykeryder4life]

hmmm thats no good somethings up for sure

[jam_asian85]

one of your hoses is probably loose, and it might had just gotten blown off today when you floored it

[hectik1]

Sounds like a boost leak.

[oskinosmee]

Update.

Ok i took the MBC off and tightened everything down and the same thing happens except it doesnt hold boost or build boost

[MSP #167]

maybe you messed up your wastegate actuator.

[oskinosmee]

maybe you messed up your wastegate actuator.

Thanks but how?

[CamelFilters]

I dont have a boost controller but i had a simillar experience:
I also noticed some backfiring with my car especially when shifting in low revvs (driving normally). My car is mostlly stock with just a MSCAI. At first i thought nothing of it for a few months but then i realized that wasnt good for the Cat converter and it didnt sound right. So i went out and changed the BOV, the shop attendant recommended me to buy a turbosmart dual port running and run it hyrbid mode but still i was getting the popping noises back there. It didnt matter how much i set the dial to harder or softer; the car would still backfire occassionally. So i decided to run it in full recirc and those popping/backfiring noises have been 99% cured. the problem all along with my car was the stock bov.

good luck

[CamelFilters]

I dont have a boost controller but i had a simillar experience:
I also noticed some backfiring with my car especially when shifting in low revvs (driving normally). My car is mostlly stock with just a MSCAI. At first i thought nothing of it for a few months but then i realized that wasnt good for the Cat converter and it didnt sound right. So i went out and changed the BOV, the shop attendant recommended me to buy a turbosmart dual port running and run it hyrbid mode but still i was getting the popping noises back there. It didnt matter how much i set the dial to harder or softer; the car would still backfire occassionally. So i decided to run it in full recirc and those popping/backfiring noises have been 99% cured. the problem all along with my car was the stock bov.

good luck

[MSP #167]

Thanks but how?

becuase you are putting stuff on the car its not suppose to have, especially a crappy mbc, they are unreliable and can cause a lot of problems.

[oskinosmee]

ok well i changed my bpv back to stock and still the same problem. any other suggestions? It only boost 6 to 10 psi with a loud squeaky noise

[MS3_Kendall]

I dont have a boost controller but i had a simillar experience:
I also noticed some backfiring with my car especially when shifting in low revvs (driving normally). My car is mostlly stock with just a MSCAI. At first i thought nothing of it for a few months but then i realized that wasnt good for the Cat converter and it didnt sound right. So i went out and changed the BOV, the shop attendant recommended me to buy a turbosmart dual port running and run it hyrbid mode but still i was getting the popping noises back there. It didnt matter how much i set the dial to harder or softer; the car would still backfire occassionally. So i decided to run it in full recirc and those popping/backfiring noises have been 99% cured. the problem all along with my car was the stock bov.

good luck

You have your Turbosmart running recirc? You set it to "Harder"?

[AutoEuphoria]

Maybe you killed your turbo? Does it still smoke a lot? Black smoke or blueish/gray? Maybe your ECU reverted to limp mode after sensing an overboost?

[oskinosmee]

Ok it only had a puff of smoke.
It doesn't smoke tho. I have a bcd also on the car.

[clos561]

i would take everything that put on the car and run it for a few days /weeks and see if anything changes. take off hoses and put them back on to ensure a good seal