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      12-26-2021, 02:15 PM   #573
derbo
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Drives: BMW M3
Join Date: Aug 2017
Location: Bay Area, CA

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Enjoying Christmas Tunes


Merry Christmas everyone!

Earlier in the year, I decided that I would keep the car emissions legal. I know this would limit my options of power mods but I felt like this was the least amount of hassle for myself.

# Reasons for staying emissions legal
  1. Don't have to swap xpipe every 2 years
  2. Don't have to swap xpipe or axleback for 90dB Laguna Seca days
  3. No need to deal with cut test pipes etc.

From a legal perspective, there are a few items that could be modified:
  • intake - no change - Currently installed AFE CF intake is CARB legal.
  • pulley - change - Dinan Pulley pending. no emissions affected
  • exhaust - no change - SS F1 Exhaust adds noise.
  • throttle bodies - possible change - Dinan throttle bodies do not affect emissions. Expensive option though.
  • tune - change - Dinan is the only CARB legal tune for sale out there.

During Black Friday, I ended up buying the Dinan pulley and DIY tune kit. The DIY Tune kit was out of stock at sale but finally arrived last week. It consisted of a USB-A to USB-B cable and Dinan branded iMIPP OBD adapter.


The Dinan software required an online connection to Dinan to get the software. The tune installation took about 30minutes. Based on the vehicle info in the software, my tune was version 1.08. I doubt Dinan will show me a changelog on the tune since 1.00. The instructions pictures showed version 1.03. Curious.



## Dinan Pulley
This is on the backburner until I decide how big of a job I want this to be. Accessing the pulley is one of those items where "while you are in there" quote makes a whole lot of sense.

Davisca455 put together a nice parts list for the pulleys without having to pay for brackets here:
https://www.m3post.com/forums/showpost.php?p=26791901

So far that is the list of parts to replace but I am decided if I want to do a cooling system refresh as well. I'm signed up for Feb 5th Sonoma Raceway so I hope to address the pulley situation by the end of January.

Anyways Happy Holidays everyone!
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