vbhargava

Finally had a chance to drive and take care of some minor maintenance items.
Tune: Wow, its freaking amazing. I wish I had done this 2.5 years ago when I bought the car. The tune/injector combination provide increased power throughout the rev range but especially below 4K. Its better everywhere without adding any harshness or reducing daily drivability.  (cant say the same for the M5 tune)
Battery replaced: Finally I dont have to jump the car every time!
Coolant Reservoir: 32 years is old enough for that plastic.


 

I love them. I really wanted a low key look and some added traction / surface area and these fit the build perfectly... especially in black. Contact @patsbimmer1 for help sourcing. 

Should deem the M5 pointless now that you have all that power 🙂

Let us know how you like it

Its time for the next big project on the M5 due to a loose rear end which is likely caused by bad bushings given that some of them have 100k on them. 
Plan:
Center support bearing Drive axle minor refresh including guibo Engine mounts Transmission mounts Differential bushings Rear subframe bushings Dinan rear sway bar All rear control arms and integral links Center exhaust hanger Rear ball joints Hawk HPS and 5.0 brake pads High temp brake fluid Oil change


 
Big thanks to @patsbimmer1for helping me source the parts and @jcw0101 for making it happen.

Its time for the next big project on the M5 due to a loose rear end which is likely caused by bad bushings given that some of them have 100k on them. 
Plan:
Center support bearing Drive axle minor refresh including guibo Engine mounts Transmission mounts Differential bushings Rear subframe bushings Dinan rear sway bar All rear control arms and integral links Center exhaust hanger Rear ball joints Hawk HPS and 5.0 brake pads High temp brake fluid Oil change


 
Big thanks to @patsbimmer1for helping me source the parts and @jcw0101 for making it happen.

Quick update. 
Returned the injectors that didnt seem to work and bought a similar set from Bimmer Baron. Car fired right up after installing the new injectors on both the stock and tuned ECU. According to @jcw0101 there is a noticeable difference in power delivery and I cant wait to take it for a spin this weekend. 
Thanks for everyone who helped troubleshoot and provided advice. @B C, @straight6pwr, @jcw0101
 

Its time for the next big project on the M5 due to a loose rear end which is likely caused by bad bushings given that some of them have 100k on them. 
Plan:
Center support bearing Drive axle minor refresh including guibo Engine mounts Transmission mounts Differential bushings Rear subframe bushings Dinan rear sway bar All rear control arms and integral links Center exhaust hanger Rear ball joints Hawk HPS and 5.0 brake pads High temp brake fluid Oil change


 
Big thanks to @patsbimmer1for helping me source the parts and @jcw0101 for making it happen.

Two small projects down:
Got the car back on the road after upgrading the pressure accumulator and coolant reservoir. 

IMG_8958.mov

I accidentally watched that video about 7 times. Love it.

Two small projects down:
Got the car back on the road after upgrading the pressure accumulator and coolant reservoir. 

IMG_8958.mov

Two small projects down:
Got the car back on the road after upgrading the pressure accumulator and coolant reservoir. 

IMG_8958.mov

Nice to see you join us!

So, I double checked that I had the ECU chip in correctly. That was good.  I went ahead and swapped back stock injectors and it fired right up.  I left my volt meter at work along with electrical test tools, but I am positive something is wrong with these injectors.  They definitely look like the Bosch injectors and have the same PN as the popular 19lb injectors for E30s, 0 280 155 710.  Also have a Ford logo on them.
She runs now, I have a few more little things to wrap up in this car and Varun told me I could take it on a short drive, I'll be begrudgingly giving it back to him today, as this is such a beautiful vehicle and drives so nicely.  Thanks again to B C for the checklist, as I triple checked my work, as any decent technician is going to think "what did I do wrong, what did I do that could cause this", a bad technician will blame the parts immediately.
 
Jamison
 
PS HEY PATRICK LONG TIME NO SEE

I am using similar injectors in my M50.  Mine also have Bosch and Ford logos because they were OE on a Ford Contour SVT with a 2.5 V6.  They were the closest to matching flow to stock M50 injectors while having a better spray pattern.  Good news is they are likely not Chinese clones, but they are used and must have a problem.  I don't recall how the fuel rail setup on an M20 is but on an M50 I needed to machine spacer rings or there is a possibility that they could drop into the intake manifold far enough that the top comes out of the fuel rail.  Pics here.  Maybe yours have enough material on the top for the retaining clips?

Yeah Iv got this below: https://www.garagistic.com/products/garagistic-e30-x-brace-cross-brace?variant=31013538824291&currency=USD
And this on top: https://www.garagistic.com/collections/e30-performance-parts/products/e30-front-strut-bar

I will go down this list tomorrow, a few of the checklist items that I've crossed off:
Electrical connectors are all secure and in order, according to wiring diagram.
Round Injector harness plug was never disconnected.
PCV hose secure to valve cover(non-original, generic hose, with very slight kink underneath manifold).
No intake boot removal.
Fuel hoses were removed- return hose is about 14" longer than hose to regulator(can't mess that up)
I installed chip according to specifications, however, I tried to start the car prior to chip install with no luck.  I figured, let me see if this idles, then install chip.
I checked wiring diagram before installing chip in ecu.
I will check the fuse and relay first thing in the morning, and disconnect the the positive terminal(only had negative disconnected due to very corroded 8mm @ positive terminal).  I didn't want to disconnect the positive terminal and have to replace that.
I will also remove ECM for verification, but again, issue was before ECM removal.
 
Thanks so much for the help, B C.  I am an Audi tech from BMW, Volvo and Porsche beginnings.  Glad to be here.  I may have one or two posts, from the before-time.  I am confident to get this car optimal, as I drove it in from Varun's place this morning, with no major issues (albeit a slightly lumpy idle).  It does need plugs, which I'll be sourcing from local auto parts stores(Bosch, or NGK, according to forum), and will update with results likely around noon.  I want to swap back in the stock injectors, and witness it fire up, after the other tests.
 
Jamison
 

I currently have stock sway bars with PSS9 coilovers on a 2001 M5. The tail is a little happy recently but I suspect its due to bushing that are bad. 
Can someone help me understand the benefits of upgrading the sway bars considering the setup for WI back roads. I am concerned I will make the car too tail happy. 
Thanks

Finally out of hibernation:

Todays projects:
cabin air filter change windshield seal new cowl fasteners

Summer plans:
rear subframe bushings coolant overflow reservoir bluebus bluetooth module (https://www.bluebus.dev/) accumulator upgrade

Summer plans:
rear subframe bushings coolant overflow reservoir bluebus bluetooth module (https://www.bluebus.dev/) accumulator upgrade

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F401851488594
 
Now, be wary that fake Bosch injectors exist on Ebay and elsewhere. Normally they are the larger flow injectors that people use in turbo builds but I wouldnt be surprised if China has tackled all popular sizes by now. Performance wise they work fine compared to the real thing, but around 80%+ duty cycle they become erratic in the tests I have seen.
Fake Bosch injectors have Bosch logos and come in Bosch branded boxes even claiming they are made in Germany. For this reason I am wary of lower priced new injectors and feel better buying ~$75 reman. injectors.
 
be advised

Knocking out some of the small projects. 
Unmodifying the front end with euro style grill, chrome kidneys and a license plate delete:

 
Coco mats:

 
Kooglewerks cupholders:

Knocking out some of the small projects. 
Unmodifying the front end with euro style grill, chrome kidneys and a license plate delete:

 
Coco mats:

 
Kooglewerks cupholders:

Minor update: Replaced the ECU with a 173 unit so that I can chip/tune and upgrade the injectors. 
Odometer stopped working so replaced the OEM gears w/Garagistic gears. Pretty easy fix that doesnt require removing the steering wheel but blew out a bulb in the process. 


 

Los Angeles to Waukesha for my car was $500 but it took 4-5 weeks and the roof got beat to hell. 
Las Vegas to Milwaukee for my Infiniti was ~$775. coincidentally I'm pretty sure Alex/ GIGI was who I had used. I was pleased with them.
The biggest mistake you can make in your life is entering your phone number into a transport service  website for a quote. I had nearly non-stop emails, texts, and phone calls for the next 4 hours after, and a solid 5-10 per day for the next 3 weeks, mostly followups to people i hadnt responded to