E36 M3 Turbo questions

[goodtimes]

I've seen a lot of people stating that OBDI cars are easier to turbo, however I see that most vendors/manufacturers have kits for OBDII as well? I also see that Turner Motorsports sells an OBDI conversion kit, so what is the benefit currently to having an OBDI car?

I was thinking that S52 cars with the extra .2l of displacement with the S50 intake manifold would be an ideal set-up for a Stage II car, being that extra displacement would help with spool and the S50's longer runners would help flow more air up top.

I have really been weighing out my options for a nice weather DD that I could also take to the track a few times a year and the E36 M3 seems like a good match for my criteria. I won't be going turbo immediately; I want to get the car set-up properly and reliable before putting more stress on it. Cooling system, oil cooler, suspension bushings, front sway bar, TRM coilovers, random things the car might need, etc., are all on the list before anything power related. That said, going turbo is definitely in my plans for the car and would like to start with the best platform for it.

Thank you for your help.

[5mall5nail5]

Used to be that OBD1 was almost the only way to get tuning. Now a lot of groups are offering OBD2 tuning.

[hellrot98m3]

Obd1 conversion on an originally obd2 car will present problems if your state requires access to the obd port for inspection purposes. Even though more options are starting to pop up for obd2, obd1 tuning is still more available. I would go with an obd1 car from the start if you plan on going f/I in the future.

[techno550]

I've seen a lot of people stating that OBDI cars are easier to turbo, however I see that most vendors/manufacturers have kits for OBDII as well? I also see that Turner Motorsports sells an OBDI conversion kit, so what is the benefit currently to having an OBDI car?

I was thinking that S52 cars with the extra .2l of displacement with the S50 intake manifold would be an ideal set-up for a Stage II car, being that extra displacement would help with spool and the S50's longer runners would help flow more air up top.

I have really been weighing out my options for a nice weather DD that I could also take to the track a few times a year and the E36 M3 seems like a good match for my criteria. I won't be going turbo immediately; I want to get the car set-up properly and reliable before putting more stress on it. Cooling system, oil cooler, suspension bushings, front sway bar, TRM coilovers, random things the car might need, etc., are all on the list before anything power related. That said, going turbo is definitely in my plans for the car and would like to start with the best platform for it.

Thank you for your help.

Good call on the coilovers. ;)

There is no reason to avoid an OBD2 car. Turbo kit for obd1 or obd2 is not a problem now. The S52 is a fantastic platform. If you are planning on building a motor though, then starting with any chassis will be fine, as you can easily source a S52 crank to stuff into any M50 based block.