OBD I or OBD II [Archive] - Bimmerfest - BMW Forums


07-02-2005, 09:02 PM
hey guys i am new and i am selling my mustang to get a m3. and i want to know if OBD I or OBD II is better the.. i know that the OBD II has more torque. so what should i get? :D

Ty Vil
07-04-2005, 01:31 PM
any 96-99 no question.

08-03-2005, 06:29 AM
Depends: If you want to go mod crazy, I would go for a 95 OBD-I car. I purposely didn't want a 10 year old M3, so I ended up with a 99 OBD-II M3, and plan to do a differential swap instead. Im not into turbo'ing/supercharging just cuz i fear reliability issues. Maintence on M3's is already enough as it is.

08-03-2005, 05:19 PM
OBD 1 responds better to typical bolt on mods. OBD 2 is harder to make more power.

Do a search, this has been discussed before in more depth.

Nick325xiT 5spd
08-03-2005, 05:22 PM
The best is a '95 with a 3.2 swapped in and converted to OBD-I. BSP legal with 300hp.

08-17-2005, 03:39 PM
so is there a way to buy a OBD-II and conver it to OBD-I?

08-18-2005, 02:50 AM
The best is a '95 with a 3.2 swapped in and converted to OBD-I. BSP legal with 300hp.

Actually the complete Conforti kit gets you about there without the switch to 3.2. That is CAI, Euro HFM, 24 lb injectors, and special software. About $1000. 297 or so.

The 3.2 does give a bit more torque down low though.

And yes, you can switch an OBD II car to OBD I, IF you state allows this. MD doesn't unless you have swapped the engine into an earlier car.

And converted car can have various problems, it is not trouble free.

08-19-2005, 10:21 PM
where do i find out is it is legal for Tn. and how much would it cost and could this be something that i could do myself? if how much would i have to spend? Thanks guys this is really helping

08-19-2005, 10:27 PM
one more thing. if i do the switch would i have to buy bolt for 95m3(obd1)?