Alpine e30 progress/build thread
-
Finally re-worked the exhaust mid section. I got rid of the crappy glass-pack and replaced it with a pair of more substantial mufflers
Before (old pic):
After:
I promise the welds are less boogery than they look in the picture. I'm going to re-paint it sometime this summer, so for now I reinstalled everything and took it for a test drive (also first drive of the year, this car is so fun). Its not necessarily much quieter, but the awful rasp is significantly better and it finally sounds half decent. The ground clearance is a little worse but I'm overall really happy with how it came out.
-
156.8k
Back in the daily driver rotation!
I never thought i'd see the day you beat me to DD rotation.
paint that damn front lip already. just flat black for now or something lol
Dan
-
I never thought i'd see the day you beat me to DD rotation.
paint that damn front lip already. just flat black for now or something lol
This is new for me, usually I am either scrambling to get it done or realizing next spring is probably what I should be aiming for haha.
Yeah yeah yeah, the plan is to paint it white eventually. Maybe I'll order one of those cheap ebay plastic ones to hold me over till then.
-
157.7k
Did some playing around with the ECU last night. On a stock e46 (ms43), there are two functions called 'driver wish input correction' and 'throttle request correction'. My understanding of them is that they limit the change rate of the throttle body depending on various inputs including engine load and RPM, vehicle speed (allows the ecu to calculate which gear you are in), clutch and brake switch, etc. It basically functions like a software based CDV by damping driver inputs. On the the ms43 wiki, they break down the parameters that control these functions and which ones to modify to disable them both completely. I made the updates and flashed the new file to the spare ECU, swapped it into the car and took it for a spin.
All I have to say is: Ho. Lee. Sh!t.
Since day 1 this car has been a little difficult to drive smoothly from a shifting/starting off perspective and I pretty much attributed it to a stiff clutch and not being Ayrton Senna. It has also been somewhat slow to rev considering the lightweight flywheel. Rev-matching took a huge throttle input compared to my old e36 with the stock dual-mass. This has been completely resolved. It is way more responsive, revs very quickly, shifting and general driving is way smoother. It's like a whole different car!! I am thinking that because my ECU is missing the speed sensor input, clutch/brake switch, and anything else that comes in through the CAN bus, that it has been defaulting to the most conservative settings. Disabling both systems completely allows it to function similar to a cable throttle. I did accidentally re-set some of the DTC suppression so I get a check engine light again, so I'll have to go back and re-do that.
And because walls of text are less fun than pictures, here is a 'meh' phone photo from my drive last night. My phone really struggles with low light. Maybe someday I'll get a nice camera.
-
that's great news!
want to go back the museum for better pictures? Ill bring my camera.
Dan
-
That is so cool about the throttle mapping change! Is there a limited number of times you can write a file to the DME? For the MSS54 you are limited to 30 I believe. Once you hit the limit the ecu is locked and has to be “virginized”. Just mentioning it in case MS43 is similar so you can plan your DME writes wisely.
-
that's great news!
want to go back the museum for better pictures? Ill bring my camera.
I would love to sometime! I'd have to clean it up a bit before that haha
-
that's great news!
want to go back the museum for better pictures? Ill bring my camera.
If I didn't have a small oil drip, and the car wasn't as low to maneuver Milwaukee roads, I'd also like to bring mine down for some Milwaukee back drop pictures.
-
That is so cool about the throttle mapping change! Is there a limited number of times you can write a file to the DME? For the MSS54 you are limited to 30 I believe. Once you hit the limit the ecu is locked and has to be “virginized”. Just mentioning it in case MS43 is similar so you can plan your DME writes wisely.
Interesting, never heard of a definite limit but it sounds like the counter can be enabled/disabled somehow? From what I am reading, the complete EWS delete flash I started with defaults to having the counter disabled so hopefully I don't run into that issue. I think I'm only at 6 or so writes total between the two ECU's I have, but I guess if I hit some kind of limit I will find out the answer haha.
If I didn't have a small oil drip, and the car wasn't as low to maneuver Milwaukee roads, I'd also like to bring mine down for some Milwaukee back drop pictures.
Socially distant WIBIMMERS photoshoots!
-
you dont need to clean the car for night shots!
If I didn't have a small oil drip, and the car wasn't as low to maneuver Milwaukee roads, I'd also like to bring mine down for some Milwaukee back drop pictures.
top 4 in the nation, baby. https://www.teletracnavman.com/resources/resource-library/infographics/worst-maintained-roads-infographic
lol head over anyways!
Dan
-
you dont need to clean the car for night shots!
top 4 in the nation, baby. https://www.teletracnavman.com/resources/resource-library/infographics/worst-maintained-roads-infographic
lol head over anyways!
41 to 94 and getting off by the art museum isn't too bad. It's pretty much everything else.
-
41 to 94 and getting off by the art museum isn't too bad. It's pretty much everything else.
Can confirm. I live in the Van Buren/State St. area when at school and most of those roads are horrendous. 6" holes (generally propagated from pavement seams) are not unheard of on side streets.
-
its decided then, e30 shoot at the museum. what night? i have nothing going on, you know quarantine and all.
Dan
-
I did accidentally re-set some of the DTC suppression so I get a check engine light again, so I'll have to go back and re-do that.
Turns out they were just old codes that somehow made it through the flash. They must be stored somewhere else. Cleared and never came back!
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login