[NoGuru]

Originally Posted by erzenble

Hey I have been having problems hitting target boost for a while now. so far i have done several boost leak checks, replaced the DV for a GFB and checked the vacuum lines i could get to. Does anyone think a boost solenoid could cause boost to react this way? here is a log thanks.

Log has 2 WOT runs both in 3rd with DSC off, first one was uphill. https://datazap.me/u/erzenble/run-af...71&tmax=100.90

Also does my WGDC indicate any sort of leak? thanks again.

WOW, that is probably the worst I have seen. Are you throwing error codes?
I can't tell you what is wrong, but you have a failure somewhere in your boost system.

[addictedtoboost]

I've been having a problem hitting target boost, I am off by like 2-4 psi usually on average when I go WOT. I did two, third gear pulls and uploaded them. Also my HPFP readings are wonky? Tell me what you guys think thanks!

Recent maintenance:

Index 12 injectors
walnut blasting
bosch coils/plugs
liquimolly oil change
new coolant
motor mounts
idler pulley/serpatine belt
o2 sensors
boost solonoids

Performance mods:

7" FMIC
TurboXS Chargepipe
Kittyless VRSF DP's
stage 2 fuel pump
Motiv Flex fuel system
3.5 tmap sensor
E40 custom flex tune.
xHp flash
Pure Stage 2s HiFlo
2" silicone inlets

https://datazap.me/u/addictedtoboost...=1&data=3-5-22

[erzenble]

Originally Posted by NoGuru

WOW, that is probably the worst I have seen. Are you throwing error codes?
I can't tell you what is wrong, but you have a failure somewhere in your boost system.

nope no codes somehow, just a slow car ha

[alexristainoN54]

someone have time to check out my log? trying V8 stage 2+ E50 rn.

https://datazap.me/u/alexristaino/v8...&data=3-20

[NoGuru]

Originally Posted by alexristainoN54

someone have time to check out my log? trying V8 stage 2+ E50 rn.

https://datazap.me/u/alexristaino/v8...og=0&data=3-20

Looks pretty good.

[alexristainoN54]

Originally Posted by NoGuru

Looks pretty good.

does boost seem abnormally off target. on stage 1 I'd hit Target or be 1 psi at most under.

I have done a lot of work lately so wonder if I'm leaking a bit


also, was talking to Ken about going custom map and he said to try out v5 E40 that it is super aggressive. anyone try this? like it better than V8 E50?

[addictedtoboost]

Originally Posted by alexristainoN54

does boost seem abnormally off target. on stage 1 I'd hit Target or be 1 psi at most under.

I have done a lot of work lately so wonder if I'm leaking a bit


also, was talking to Ken about going custom map and he said to try out v5 E40 that it is super aggressive. anyone try this? like it better than V8 E50?

Yes I have tried the V5 E40 map before on stock turbos and was able to run a 11.7 1/4 mile with trap speed of 119. That's my best time so far using a OTS MHD map. The tune is pretty aggressive indeed.

[alexristainoN54]

Originally Posted by addictedtoboost

Yes I have tried the V5 E40 map before on stock turbos and was able to run a 11.7 1/4 mile with trap speed of 119. That's my best time so far using a OTS MHD map. The tune is pretty aggressive indeed.

That's pretty awesome. I'll check it out for sure and report back.

[alexristainoN54]

Very off topic, but happened after a flash I got the red service light.
Any way to read this? MHD wont pick up what's overdue for service, neither will idrive.

[IllSic_Design]

Any service notifications should show up in I drive, either the Check Status section or service reminder section.

[mweisdorfer]

Originally Posted by ShadowisE

https://datazap.me/u/shadowise/3-4-pull
https://datazap.me/u/shadowise/rough-idle

Trying to figure out why I'm getting such a rough idle, if anyone please has any ideas what to check? 2011 335is 50k miles: fmic and chargepipe upgraded. No tune.

I replaced spark plugs and ignition coils without any improvement. I pulled the plugs after letting the car rest for ~8 hours and couldn't see or smell any fuel on them. Not sure how else to check if it's leaky injectors.

I noticed a large amount of timing corrections on cyl 1 during idle and the pull. After letting off the throttle I see that afr for bank 1 doesn't stay pegged that's why I was thinking leaky injector/s. Probably going to take is in to a shop in the Milwaukee area since I haven't been able to diagnose the issue.

Here's your symptoms of leaky injectors -

- Starting issues
- Poor idle
- Failed emissions
- Poor Performance
- Engine does not reach full RPM
- Increased fuel consumption
- Rough engine performance
- Surging and bucking under various throttle loads
- Smoke from the tail pipe
- Engine Knock or Detonation which can lead to catastrophic engine failure

[alexristainoN54]

Originally Posted by mweisdorfer

Here's your symptoms of leaky injectors -

- Starting issues
- Poor idle
- Failed emissions
- Poor Performance
- Engine does not reach full RPM
- Increased fuel consumption
- Rough engine performance
- Surging and bucking under various throttle loads
- Smoke from the tail pipe
- Engine Knock or Detonation which can lead to catastrophic engine failure

I was having similar issues are replaced my lpfp for a stage 2 and haven't had any any issues since. Make sure ur lpfp isnt going bad, if not then very likely it's injectors.

[mweisdorfer]

Originally Posted by alexristainoN54

I was having similar issues are replaced my lpfp for a stage 2 and haven't had any any issues since. Make sure ur lpfp isnt going bad, if not then very likely it's injectors.

Well, start with the LPFP sensor first. There is an updated version. The sensor should be reporting 70psi or so and it should fluctuate with RPM.

Replace it, if not.

If after replacing it, you still have issues then either replace the LPFP with an OEM, stage 1 + an OEM or a stage 2.

[srey]

Would running inlets with an OTS tune cause overboost? I'm not throwing a code, but am consistently getting slight overboost now.

Background

• I live at about 5000', which is why ambient pressure is low.
• Earlier this spring I installed catless dps, vrsf 7" hd, and vrsf inlets to try to get my turbos to spool faster.

I'm running MHD stage 2+, and in my logs I have two things that bug me. It's still taking about 1000 rpm to hit boost target (no leaks) in a 3rd gear pull, and now I'm getting slight overboost. I assume it's the inlets that are contributing to that. Anything else I'm missing? I appreciate you looking at my logs.

back to back pulls after driving hard for a bit.

https://datazap.me/u/chsjapanese/log...ta=1-3-5-15-23
https://datazap.me/u/chsjapanese/log...ta=1-3-5-15-23

Maybe I just need to get a custom tune.

[IllSic_Design]

Originally Posted by srey

Would running inlets with an OTS tune cause overboost? I'm not throwing a code, but am consistently getting slight overboost now.

Background

• I live at about 5000', which is why ambient pressure is low.
• Earlier this spring I installed catless dps, vrsf 7" hd, and vrsf inlets to try to get my turbos to spool faster.

I'm running MHD stage 2+, and in my logs I have two things that bug me. It's still taking about 1000 rpm to hit boost target (no leaks) in a 3rd gear pull, and now I'm getting slight overboost. I assume it's the inlets that are contributing to that. Anything else I'm missing? I appreciate you looking at my logs.

back to back pulls after driving hard for a bit.

https://datazap.me/u/chsjapanese/log...ta=1-3-5-15-23
https://datazap.me/u/chsjapanese/log...ta=1-3-5-15-23

Maybe I just need to get a custom tune.

Yes, inlets with OTS tune can cause overboost. I have inlets and outlets and run an OTS(yes I know I should/need to get a custom tune lol) and get occasional overboost when at the track and pushing hard down the long straights.

[Chris1337]

https://datazap.me/u/chris1337/decent-start-rev-4

this is a start up of my car. on fbo e85 port injection is there anything I can do to make the start up roar better? Tuner says this is as good as it gets with e85, could I need better ignition or something?

[NoGuru]

Originally Posted by Chris1337

https://datazap.me/u/chris1337/decent-start-rev-4

this is a start up of my car. on fbo e85 port injection is there anything I can do to make the start up roar better? Tuner says this is as good as it gets with e85, could I need better ignition or something?

If you want start up Roar, don't run E85.
Car will not be as quick, but hey, you can get 20 seconds of glory

[type-dRew]

Originally Posted by srey

Would running inlets with an OTS tune cause overboost? I'm not throwing a code, but am consistently getting slight overboost now.

Background

• I live at about 5000', which is why ambient pressure is low.
• Earlier this spring I installed catless dps, vrsf 7" hd, and vrsf inlets to try to get my turbos to spool faster.

I'm running MHD stage 2+, and in my logs I have two things that bug me. It's still taking about 1000 rpm to hit boost target (no leaks) in a 3rd gear pull, and now I'm getting slight overboost. I assume it's the inlets that are contributing to that. Anything else I'm missing? I appreciate you looking at my logs.

back to back pulls after driving hard for a bit.

https://datazap.me/u/chsjapanese/log...ta=1-3-5-15-23
https://datazap.me/u/chsjapanese/log...ta=1-3-5-15-23

Maybe I just need to get a custom tune.

You don't want to run inlets or outlets on any OTS tune.

At your altitude, the only solution for performance is a custom tune, dialing in the car where you are at is the only thing that will make a meaningful difference, hard parts can't compensate for lack of air density.

[charmander]

Is there anything to be concerned about? Planning to flash Stage 1+ after doing some maintenance. Thanks!

N55 Stage 1 93oct Flash
5'' Intercooler
AA Chargepipe
XHP Stage 2

https://datazap.me/u/charmander/n55-...22-23-24-25-26

[RoughKnight]

Originally Posted by charmander

Is there anything to be concerned about? Planning to flash Stage 1+ after doing some maintenance. Thanks!

N55 Stage 1 93oct Flash
5'' Intercooler
AA Chargepipe
XHP Stage 2

https://datazap.me/u/charmander/n55-...22-23-24-25-26

You're pulling a bit of timing at WOT, it should be at 0. Cylinder 5 is going nuts. I would try the stage one 91 oct and see if you can get all 0's during the pull. Maybe somebody with a bit more insight can correct me if i'm wrong.

[muncie21]

Originally Posted by charmander

Is there anything to be concerned about? Planning to flash Stage 1+ after doing some maintenance. Thanks!

N55 Stage 1 93oct Flash
5'' Intercooler
AA Chargepipe
XHP Stage 2

https://datazap.me/u/charmander/n55-...22-23-24-25-26

You are slow to build boost (after hitting initial target) for some reason. Could be lazy boost solenoids or vacuum leak or...,

[Chris1337]

https://datazap.me/u/chris1337/3rd-g...;mark=36-39-37

currently fbo e85 with port injection. any ideas on why I run out of rail pressure?