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      03-14-2013, 01:29 AM   #1
Joshhleee
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jb1 issue.

Sup fellow f30 members, so I have a 328 n26 with a jb1 with 5k on the car and i've noticed my car makes a grinding sound on start up and changing gears from 1-3k rpm. Not sure what it is, might be a charge pipe? Anyways should I remove my jb, clear it, and take it in? Don't think its normal.
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      03-14-2013, 03:12 AM   #2
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Originally Posted by Joshhleee View Post
Sup fellow f30 members, so I have a 328 n26 with a jb1 with 5k on the car and i've noticed my car makes a grinding sound on start up and changing gears from 1-3k rpm. Not sure what it is, might be a charge pipe? Anyways should I remove my jb, clear it, and take it in? Don't think its normal.
Wrong forum.

But yes.
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      03-14-2013, 09:21 AM   #3
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Hope the dealer doesn't have a way of checking whether you had it installed before.
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      03-14-2013, 10:21 AM   #4
Joshhleee
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im going to go to EAS to get my car cleared.
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      03-14-2013, 03:11 PM   #5
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My car kind of makes a grinding sound upon cold start up but goes away after a few minutes (once car is warmed up a bit).
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      03-14-2013, 06:55 PM   #6
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Quote:
Originally Posted by Joshhleee View Post
i've noticed my car makes a grinding sound on start up and changing gears from 1-3k rpm.
How is this related to a JB1 issue?
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      03-15-2013, 12:13 AM   #7
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How is this related to a JB1 issue?
or i thought the jb did something cause of the extra horespower and torque, idk just my thoughts.
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      03-15-2013, 01:02 AM   #8
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Originally Posted by Joshhleee View Post
or i thought the jb did something cause of the extra horespower and torque, idk just my thoughts.
Not a grinding noise though.
Have you had a chance to remove the JB1 & test?
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      03-15-2013, 08:32 AM   #9
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Originally Posted by David328M-Sport View Post
Not a grinding noise though.
Have you had a chance to remove the JB1 & test?
not yet.. too lazy to take it out, LOL. im probably going to end up doing it asap then check before taking it in though. but you do have a good point, doubt the problem is due to the jb.
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      03-15-2013, 12:51 PM   #10
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Originally Posted by Joshhleee View Post
not yet.. too lazy to take it out, LOL. im probably going to end up doing it asap then check before taking it in though. but you do have a good point, doubt the problem is due to the jb.
Too lazy? It's potentially hurting your car and you're too lazy to take it out to see if its the problem? SMH.
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      03-15-2013, 03:27 PM   #11
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It's potentially hurting your car and you're too lazy to take it out to see if its the problem?
With thousands of JB units out there (N54,55 & 20), there hasn't, to my knowledge, been one single unit causing grinding. I doubt very much this is the first. We would be the VERY first to know if it did.

How does a piggyback tune affect a cold engine/transmission grinding startup?
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      03-15-2013, 09:15 PM   #12
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As the power gain with JB1 is fairly modest, most likely it is coincidental that your car is having grinding noise and happen to have JB1. Factory tuned cars have problems all the time. And since JB1 is the most popular tune right now, the likelihood of such owner reporting problem with their car is more.
But I would still take off my tune just to be on the safe side.
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      03-16-2013, 12:37 AM   #13
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When you say grinding sound, is it grinding from the engine? Does it do it while your moving or not moving? Could it be something else like something with your suspension grinding?
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      03-16-2013, 02:47 AM   #14
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Originally Posted by RollingLower420 View Post
When you say grinding sound, is it grinding from the engine? Does it do it while your moving or not moving? Could it be something else like something with your suspension grinding?
its when i first start the car and im idle in park, then the other sound happens when moving slowly in low gears around 1-3 rpm.
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