325e turbo / fun project

[squidmaster]

The signal wire runs through a resistor (10-20k, or use a pot) to the VR+

[Dreißiger]

1987 325e Turbo

Quick question, I am installing a turbo in my 1987 325e just got the wideband set up and have the ms2 pnp wired up. I installed the 60-2 trigger wheel with the sensor but I have no clue where the wires for the trigger wheel sensor link up to. Was wondering if you could help me out?
This should be the last step to getting the megasquirt running hopefully.
Thank you.

[Cyrix2k]

quick bump - been tuning. Also shot this exhaust video

http://youtu.be/84HiA6qFJJs

[Cyrix2k]

Thanks for the suggestions. I ended the video early because I had the AE disabled and there was a lean break up. Prior to that I had the AE 50/50 between MAP & TPS based and I think it was acting as a crutch for additional fueling (the MAP part specifically). I can't wait to get it all swapped over either :) It's fun having a complete ratted out car, but I'm ready to have a nice interior again.

[codrum]

Looks/sounds great and I'm loving the zip-tied wideband gauge to the steering column :)

I also highly recommend overlaying your spark advance in your top log window. Then press the up-arrow on your keyboard in MLV for the highest resolution in your pulls. You can really see where to smooth out the timing table to get consistently smooth boost. Looks like you've got some break-up when getting on it in third.

I spent the weekend on mine and it made a huge difference. Great build, can't wait to see it swapped over.

[Cyrix2k]

Finally a better video of the '85. I didn't get on it too hard for two reasons - A) it turns out it's kind of hard to drive with a camera in your hand and B) I forgot the acceleration enrichment was disabled from an earlier tuning run. I'll redo it eventually.

http://youtu.be/rV5o5cHWqdY

[Cyrix2k]

Look what showed up:









Everything is there, but some assembly is required. The engine wasn't running when I got it, but she fired up this afternoon. At this point, I need to order small odds and ends (mostly seals & hoses), pull it apart, reroute some wiring, then put everything back together and get her on the road.

[Cyrix2k]

I just went for a 30+ mile drive this evening after a long drive over the weekend. I fixed the jerky throttle by retarding the timing map in the low load areas and have been fine tuning the VE table. Overall, the e30's running damn well; it even started in the cold evening without a problem (need to keep my foot on the gas for warm up, but that's to be expected without an ICV). The last real tuning bug to iron out will require some wiring adjustments; my MS & sensors are all grounded through the same wire so the sensor inputs are seriously noisy. It's bad enough that I'll get some AE when cruising which causes the car to occasionally jerk.

Oh, and the '91 will tentatively arrive around November 3rd.

Quick 3rd-5th pull from last night. The speed at the end was 90 mph (5th @ 3500 rpms), 3rd gear started at about 32 mph with 8 secs elapsed. 60-80 (4th) was 2.25 seconds. The chassis is too loose right now for me to run it any harder. Oh, and I'm not going to show my coolant or MAT sensor logs - they're embarrassing from the noise, but that's why the injector duty looks noisy.

[Cyrix2k]

Update: the '91 still needs to be towed home and I bypassed the heater core on the '85. The '85 is now back to running very well - I have a few minor issues to work out still but overall it's pretty driveable. When I move to the '91, I need to make a new wiring harness with dedicated sensor grounds because I have some seriously noisy inputs :( I'm surprised it runs as well it does given the way my logs look...

[Cyrix2k]

annnnd the '91 is mine.

[Cyrix2k]

thanks. I pulled the motor out in an actual garage complete with air tools.

[efficient]

i like your little pad were your car sits. gonna go buy some bricks to put underneath my car. did you pull the motor out on that little pad?

[Cyrix2k]

Updates... heater core developed a leak over a month ago, I went to Japan, had fun, came back to the States, and haven't touched the car since other than to start it. Prior to the heater core it was running well enough to drive around town and I put several hundred miles on it. Now it looks like I'll be replacing this e30 with my friend's (1MZ on these forums) '91 318i 24v project which has a new motor, rust free chassis, and good interior. The turbo parts will be swapped over and this car will be sold as a running 24v swapped beater. I have a friend who is currently interested in buying it, but it will be for sale if he drops out. Price is up in the air because I don't even know how to begin pricing this thing.

Pics!

Sunrise at 12,800 feet





New ride(?)

[Cyrix2k]

It runs and stops! :D I've been driving it now and working out the bugs. It needs tuning work but my usb->adapter keeps dropping. I ordered a new interface that should be here any day. Right now the acceleration enrichment needs help, it could probably have the boost part of the map leaned out a tad, and it runs lean (17-18:1) at low loads. It also needs an electric fan, exhaust, and probably some sort of vent on the turbo side; the hood gets very hot after the car sits.

http://www.youtube.com/watch?v=i8Xyaob--_c

Few things:
-that wire is my very ghetto antenna
-I eased through first and the beginning of second, then rolled into the throttle.
-All the crap on the dash is from me cleaning the car. I'll get that taken care of soon
-The tune needs work. It's running rich in boost so it's safe to boost, but the accel enrichment causes that lean stumble when I shift. If I shift slow, it's fine and if I shift quickly it's fine. In between... stumble. I'll get it fixed as soon as that bluetooth adapter comes in.
-it's a cell phone video. Better videos will come soon.

[Cyrix2k]

Latest update... I've been tuning so it idles SMOOTHLY now, but on my last run I blew a brake line in the rear @ 70 mph. Always fun. I'm going to jack the car up tomorrow and see if it's a soft line or a hard line, then order the appropriate parts.