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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Tell-tale signs of piggyback use?



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      05-05-2010, 09:28 AM   #1
DefBringer
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Tell-tale signs of piggyback use?

For those of you with JB3/Procedes, have you settled into the habit of removing/reinstalling your piggyback with each dealership visit? Has the install/removal become easier as you have performed it each time? I'd like to not have to spend an hour in my garage before and after each service visit...

And lastly, is it possible to remove/reinstall these piggybacks without tearing up your engine bay? For example, repeated opening up of the ECU box...can BMW techs see that this thing has been messed with from all the handling?
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      05-05-2010, 10:08 AM   #2
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how much is your warranty worth? If you pay attention to your install and unstall of a tune you will not have any issues.
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      05-05-2010, 10:09 AM   #3
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Quote:
Originally Posted by coldasicex5 View Post
The best response to any tampering, tune or not tuned. "Curiosity". No code, no proof.
I guess I am kind of an idiot but I am having a hard time understanding what you're telling me.
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      05-05-2010, 10:11 AM   #4
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Quote:
Originally Posted by DefBringer View Post
I guess I am kind of an idiot but I am having a hard time understanding what you're telling me.
If they see signs of opening up the ECU box and question you on it, reply with "curiosity". :facepalm:
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      05-05-2010, 10:12 AM   #5
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Quote:
Originally Posted by Balzz View Post
If they see signs of opening up the ECU box and question you on it, reply with "curiosity". :facepalm:
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      05-05-2010, 10:27 AM   #6
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I'm just surprised you've had one car this long.
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      05-05-2010, 10:32 AM   #7
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After a service, I was inspecting my engine bay and I noticed that some of clips and the pieces that need to be removed to get to the ECU were not clipped in completely and were loose.

The dealership went on a fishing expedition to search for a piggyback tune on my car. Of course they didn't find anything, because I don't have a piggyback. I was fairly annoyed.

All of this because the a Service Advisor had to do a drive along with me to check for some rattles. He thought the car felt stronger than stock and asked me if I had upped the boost on the car. I was completely stock at the time, but I guess he didn't believe me.
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      05-05-2010, 10:39 AM   #8
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I've had the techs break clips, loose screws in my engine bay. If they ask I'm going to say, one of the techs must have done it.
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      05-05-2010, 10:57 AM   #9
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Quote:
Originally Posted by Balzz View Post
I'm just surprised you've had one car this long.
LOL me too. Although I was 996 Turbo shopping until I saw that my insurance would go up $100 a month...

This is the best car for me until BMW makes turbo M3s.

GT-R - way too expensive, Nissan gets hard-ons voiding warranties
Z06 - Can't drive it year-round - would need a DD beater
E92 M3 - no torque, gas guzzler
997 S - performance doesn't match cost

335 is such an amazing value, I'm an idiot for even considering selling it.
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      05-05-2010, 11:28 AM   #10
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Quote:
Originally Posted by coldasicex5 View Post
this is true as well!!
+1 they broke the clips on the front piece that connects to the cowl.
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      05-05-2010, 12:19 PM   #11
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It does get easier (and more enjoyable) every time I go in to remove and reinstall the piggyback. Also, it was a good time to upgrade to 2.0, hookup map switching for the vent gauge and run the usb cable into the glovebox. Since mine was a demo I could always claim that there was history before me taking ownership. I haven't had an issue though as my SA is very easy to work with. I should buy her flowers to say thanks.
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      05-05-2010, 12:22 PM   #12
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Quote:
Originally Posted by r45t4m4n View Post
I've had the techs break clips, loose screws in my engine bay. If they ask I'm going to say, one of the techs must have done it.
when my dealer replaced my HPFP, they broke the TMAP sensor clip, which the one we usually break during JB+ install. it pissed me off since that is a big excuse for them to prove i tune the car.
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      05-05-2010, 12:34 PM   #13
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lol I broke that clip on the TMAP sensor
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      05-05-2010, 01:03 PM   #14
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335i owner under the age of 35 is a tell tale sign lol.
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      05-05-2010, 01:09 PM   #15
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Quote:
Originally Posted by medeiro View Post
335i owner under the age of 35 is a tell tale sign lol.
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      05-05-2010, 01:28 PM   #16
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It does not yoid your warranty to open the ECU. It takes about 15-20 minutes to access it after you have done it once.
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      05-05-2010, 01:34 PM   #17
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haha I think i should perform my after service checks to make sure all screws/ bolts clips are still intact and present before leaving. You'd think that a tech would be used to doing all of these things many many times before so they would know how to take it apart and put it back together properly...
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      05-05-2010, 03:50 PM   #18
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You guys should use tamper-proof paint on the cowl bolts and screws, sort of like how certain dealers are wiring shut or painting ECU boxes
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      05-05-2010, 05:27 PM   #19
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Hey Def Bringer. Did you by chance own an rx7? I remember you from the forums over there.
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