1997 m3 sedan with s54 swap

[3staxontheradio]

I never realized there was a dedicate member builds sub-forum until today. Can a mod move this over there for me?

[heinzboehmer]

I never realized there was a dedicate member builds sub-forum until today. Can a mod move this over there for me?

Done

[Bry5on]

Kevin’s old car?

Kevin Perdriere? If so, I did the S54 swap tune on this car almost 15 years ago Small world. Time to get you a carbon airbox!!

[3staxontheradio]

Different Kevin. Kevin Putvin here in NC.

[discoelk]

How much post processing work is going into those scans? I have an einstar and your scans just blow mine away. Cool build!

[3staxontheradio]

Those are raw scans no postprocessing.

[ZiMMie]

You should also consider integrating the snorkel located behind the headlights into your CSL snorkel design. You don’t need Euro headlights for this, as the opening and factory snorkel are present on all E36 models both US and Euro versions. There’s plenty of fresh air available in that area since BMW uses it to feed the airbox. The stock snorkel is identical across all E36 models, except for the Euro M3, which has an additional small pipe that routes air to the brake duct. In my opinion, combining this setup with your design would give you the best results.

[3staxontheradio]

I'm finally trying to get a CSL box in my car. I bought a MSS54 HP with a CSL map tune already loaded. Slightly scared to order something from Europe that expensive with a lead time that long (karbonius says 12 week, haimus up to 8 weeks)because anything could happen with tariffs between now and then.

Im good with either a karbonius or haimus box. Pros and cons of both. I might just try and wait for one to show up for sale used since that could be quicker and sidestep tarriff issues. If anyone is planning to sell one DM me.

[3staxontheradio]

You should also consider integrating the snorkel located behind the headlights into your CSL snorkel design. You don’t need Euro headlights for this, as the opening and factory snorkel are present on all E36 models both US and Euro versions. There’s plenty of fresh air available in that area since BMW uses it to feed the airbox. The stock snorkel is identical across all E36 models, except for the Euro M3, which has an additional small pipe that routes air to the brake duct. In my opinion, combining this setup with your design would give you the best results.

I'll take a look at that. It looks reasonably big like that might be a simpler alternative air path.

[3staxontheradio]

Ordering a karbonius box tomorrow - Getting everything else sorted out


I'm doing a Kassel map sensor setup
Mss54hp comes from nextelbuddy next week
I have pre facelift throttle body boots and am getting some worm clamps because I plan to have the box off a lot

Air filters: ECS has the OEM filter for $229 (ouch) so I guess I'm doing that.
The rest of the odds and ends are easy enough to track down.

The dipstick in an S54 swap E36: anything different there with an E46 as far as bending and moving it around?

[heinzboehmer]

I would skip the Kassel MAP setup and do either OE CSL air rail or the brake booster hose adapter.

Had the Kassel kit on mine and it was causing some funkiness with the tune. Sensor is so close to the throttle bodies that it sees pressure pulses with every crank revolution instead of a smoothed reading.

[3staxontheradio]

I had wondered how the CSL tunes manage a decent map signal with such a small air volume but I hadn't thought the sensor placement would have that big on an impact.

[George Hill]

Sensor in the brake booster vacuum line just works. Cheap, easy to install and wire (especially with on the E46, but should be for you too get it into the wiring loom as well).

[heinzboehmer]

I had wondered how the CSL tunes manage a decent map signal with such a small air volume but I hadn't thought the sensor placement would have that big on an impact.

Bry5on knows the details of how it was impacting the tune since he was doing the actual tuning. I was really just collecting data for him.

But yeah, moving from Kassel to CSL air rail solved a few part throttle driveability issues that my car had.