[8Series]

Recently my waste gates have been rattling louder than ever and I removed my JB4 as well as changed from a JB4 back end to a full e40 map with MHD. I included a log below if you guys could give me some insight. I'm on a tight budget as I'm going through a divorce?.

my modifications are as follows:
Larger FMIC (Don't remember brand)
AFE cold air intake
Catless Downpipes
Synapse Charge pipe & BOV

Car is a 2007 e92 335i with almost 138k miles I'm the second owner.

http://www.datazap.me/u/mrg12695/log-1472330619

I'm afraid of how much I'm gonna need to spend, I was looking at VTT stage 1s possibly because I cant simply afford RBs or stage 2s. I talked to B&B Autohaus who I usually take my car to and they quoted 1300-1500 to install new turbos.

[WedgePerformance]

Good chance that the turbos are warn, but the boost solenoids play a big part in closing the WG to allow the turbos to make boost. Recommend replacing the boost solenoids before you go and spend a bunch of money on turbos only to find out the boost solenoids were the primary cause of low boost and rattle.

[8Series]

Originally Posted by WedgePerformance

Good chance that the turbos are warn, but the boost solenoids play a big part in closing the WG to allow the turbos to make boost. Recommend replacing the boost solenoids before you go and spend a bunch of money on turbos only to find out the boost solenoids were the primary cause of low boost and rattle.

I really appreciate your response, I'm going to look into the solenoids now!

[siphor1989]

Hopefully it's something cheap and simple like boost solenoids and/or bad vacuum lines.

On a side note, perhaps someone more knowledgeable can explain why the DME is not applying more wgdc when boost target is clearly not being achieved? Looks like wgdc is only maxing out at 60%.

[8Series]

Originally Posted by siphor1989

Hopefully it's something cheap and simple like boost solenoids and/or bad vacuum lines.

On a side note, perhaps someone more knowledgeable can explain why the DME is not applying more wgdc when boost target is clearly not being achieved? Looks like wgdc is only maxing out at 60%.

Could it be the flash?

[335is-dct]

you have an injector problem, on bank 2 i think. large discrepancy between bank 1 and 2 fuel trims, and bank 2 is running noticeable leaner than 1. i would address that before anything else, fueling is important. it may be a leaking injector on bank 2, see if your plugs smell of fuel.

in regards to the turbos, while they are definitely not hitting target, wgdc is not overly high. like wedge suggested, swap out the solenoids and see if that fixes the issue.

[8Series]

Originally Posted by 335is-dct

you have an injector problem, on bank 2 i think. large discrepancy between bank 1 and 2 fuel trims, and bank 2 is running noticeable leaner than 1. i would address that before anything else, fueling is important. it may be a leaking injector on bank 2, see if your plugs smell of fuel.

in regards to the turbos, while they are definitely not hitting target, wgdc is not overly high. like wedge suggested, swap out the solenoids and see if that fixes the issue.

I have been getting a 30BE code sometimes saying "Injector Calibration, plausibility". I'll research more thank you