First time MS user, VR6 Turbo

[DieGTi]

I don't... I've tried it in the past but it can often times make things much worse.

[need_a_VR6]

Misfires and other things will throw it way off. You sure you dont have a dead or intermittent cylinder?

[Sharino]

I am actually thinking my problems now are down to the diverter valve. I am running a forge Supersize DV. Since I am running 18psi I put in the yellow 15-23psi spring. That seems to open the DV way to often and leaks, it actually runs best on the red sping thats suppose to be 30+ psi though.

Currently I just have the valve open to atmosphere, one side is left unconnected.

I am not even sure if those values are correct for the Supersize DV, as it came with no instructions and online they have no info on it, that is just the generic values for Forge springs I guess.

I am going to email forge and verify that is all correct.

[Sharino]

Got some progress done tonight. I found out 2 major problems

-first, my DV (forge Supersize) needs to run the 30+ red spring in a 18psi set up as per Forge instructions I got today, also, it had a leak, even though it is brand new, I took it apart and greased everything, that stopped the leak as per a leak test showed before and after.

-secondly, as mentioned before, my Wideband gauge and what TS was reporting, was way out of wak again. I entered some manual linear settings (1V-10 and 5V-20) and they are insync perfect throughtout the range now.

Combination of both these items really woke up the car (as well as some tips for my MSQ from DieGTI!). I was running way to rich in boost and TS thought it was 12 when my gauge was showing 10. I will take a longer drive tomorrow with autotune, a 20min drive today really helped and I saw almost instant improvements.

[DieGTi]

Further progress?

[Sharino]

Further progress?

Not really, kinda got frustrated and gave up, car is not performing nearly like I thought.

I am going to switch it over to sequential injection when I get ambitious. My boost is dropping as RPMS are climbing, not sure what is causing that, looks like a boost leak but I can't find it.

[DieGTi]

What kind of boost drop across what RPM's? Shouldn't be dropping with that turbo unless there are a couple cylinders dropping out.

[Prof315]

What kind of boost drop across what RPM's? Shouldn't be dropping with that turbo unless there are a couple cylinders dropping out.

I've seen datalogs of this issue and I don't believe it's a miss. It builds boost, spikes ~19-20 psi and then slowly tapers down. Looks like a wastegate or BOV leak to me.

[DieGTi]

are the datalogs on the msextra forum?

[Prof315]

No he emailed them to me

[Sharino]

What would you guys recommend at this point? DV is brand new, as are also all of the components. I cannot find a leak anywhere. The car is burning through fuel like there is no tomorrow. Yet my AFRs seem to be running ok.

[DieGTi]

Fly me out to Winnipeg for a weekend and I'll tune it for you.

[Sharino]

Trust me, I am almost at that point. Not sure if its the tune though or something mechanical. I don't think the tune will cause the boost drop I am having.