[Hunterrr1615]

Hello, I own a 2009 335i and the only things I've upgraded was a charge pipe, bov and dci I wanted to run a stage 1 tune would it affect my car in any negative way or would I be safe with those components being reinforced already. Thanks

[ky0u]

Originally Posted by Hunterrr1615

Hello, I own a 2009 335i and the only things I've upgraded was a charge pipe, bov and dci I wanted to run a stage 1 tune would it affect my car in any negative way or would I be safe with those components being reinforced already. Thanks

Are you referringto MHD? If so, you can safely run St.1
Any of the "+" maps require an FMIC

If you haven't already, give your maintenance items a once over. Plugs, coils, etc. Sometimes they're near end of life but holding on at stock power. Then people flash the car and they fail and cause issues

[Bimmer_Bro]

Originally Posted by Hunterrr1615

Hello, I own a 2009 335i and the only things I've upgraded was a charge pipe, bov and dci I wanted to run a stage 1 tune would it affect my car in any negative way or would I be safe with those components being reinforced already. Thanks

As mentioned, coil packs and spark plugs are under a lot more stress with a tune. If you want to play it safe, it's best to replace both before turning up the boost with stage 1. The Bosch 3 prong plug work great even tuned.
We see weekly threads on here of people chasing misfire because their coils or plugs are too old.

[Saif2018]

Originally Posted by Hunterrr1615

Hello, I own a 2009 335i and the only things I've upgraded was a charge pipe, bov and dci I wanted to run a stage 1 tune would it affect my car in any negative way or would I be safe with those components being reinforced already. Thanks

Spark plugs and coils might fail, (OEM Bosch plugs and Eldor/Delphi coils recommended) other than that you should be fine.

[relative4]

How old are those injectors? I went stage 1 with a leaky index 5, blew out the turbos and the cats.