the road to MS.. (megasquirt, not multiple sclerosis) - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


ECUs and Tuning Discuss Engine Management, Tuning, & Programming

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-24-2013, 04:11 PM   #1
Senior Member
Thread Starter
 
Join Date: May 2011
Location: Pennsylvania
Posts: 1,119
Total Cats: 33
Default the road to MS.. (megasquirt, not multiple sclerosis)

Alright, so im finally able to start my journey to being aids-less.
I have purchased some decent 550cc injectors, all flow tested and in great shape. I'm now sorting through the car to make sure i have everything in order. Havent messed with the car much since i bought it a million years ago, but looking through some of the stuff, sometimes i wanna kick the PO.
Turbo "kit" is, or WAS, a Greddy. all thats left of the greddy is the turbo, heatshield, and intake elbow.

Here is a question...



Why would the PO have a bipes acu, AND a j&s safeguard system in conjunction???

the bipes ACU just retards timing based on whatever you want, AFM, intake temp, or RPM's

the J&S (which i plan to keep with the MS) uses the knock sensor, and retards INDIVIDUAL cylinders accordingly.

This looks to me like the J&S is acting as a safeguard IN CASE the BIPES fails (more than it already fails, being a bipes)

It is all fail, and i plan on fixing it. I guess what im wondering is, if i remove the BIPES, the car wont start, just turn over. I dont know enough about this system, or how it was wired. i want to just unplug my ECU, and plug in the MS... but if it wont start without the BIPES connected with the Stock ECU, i ASSUME it wont start with the MS and bipes disconnected.

Should i leave the BIPES on WITH the MS? or does someone know how this fail can be remedied???
Attached Thumbnails
the road to MS.. (megasquirt, not multiple sclerosis)-k0lguo.jpg  
supercooper is offline   Reply With Quote
Old 07-24-2013, 04:12 PM   #2
Senior Member
Thread Starter
 
Join Date: May 2011
Location: Pennsylvania
Posts: 1,119
Total Cats: 33
Default

oh... and please ignore the dirty *** glovebox... lol
supercooper is offline   Reply With Quote
Old 07-24-2013, 04:16 PM   #3
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,192
Total Cats: 2,583
Default

trace the wires from the bipes to the harness. he probably cut the wires and wired in the bipes input/output separately so if you simply unplug the unit it breaks the circuit/connection to the ecu and car don't work.

undo that and voila

don't leave it in there. that would be retarded (pun intended)
18psi is offline   Reply With Quote
Old 07-24-2013, 04:26 PM   #4
Senior Member
Thread Starter
 
Join Date: May 2011
Location: Pennsylvania
Posts: 1,119
Total Cats: 33
Default

Quote:
Originally Posted by 18psi View Post
trace the wires from the bipes to the harness. he probably cut the wires and wired in the bipes input/output separately so if you simply unplug the unit it breaks the circuit/connection to the ecu and car don't work.

undo that and voila

don't leave it in there. that would be retarded (pun intended)


haha, awesome... I'll have to start tracing them... As you can see, ive stripped all the shrouding off the Birdsnest of Aids wiring. lol
I pulled it all off... and was like...wtf.. lol

Alright, so find and reconnect the break... fix the no start problem (thanks 18!)

Now, i brought this up in another thread... I plan to keep the J&S wired in. I was told that it is still relevant, and will not negatively interact with the MS. Is there anything i should know about going this route? I ASSUME ill be the only person who has done that, as i have done alot of reading on MS, and have NOT encountered any talk of it with anyone else. lol

Why would someone run BOTH the Bipes AND J&S?, is what im wondering.. Just for my own knowledge, as i will soon be a Squirter like most of you gays.

Im thinking it was a Backup FOR a Backup to prevent ultimate failsauce (maybe it HAS worked, since its been in there AT LEAST 4 years at 17psi)
supercooper is offline   Reply With Quote
Old 07-24-2013, 04:38 PM   #5
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,192
Total Cats: 2,583
Default

I dont think its a backup. I think the bipes retards for boost accross the board, and the j&s was used exclusively for its knock sensing and reacting abilities.

Just a guess of course.
18psi is offline   Reply With Quote
Old 07-24-2013, 04:39 PM   #6
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,889
Total Cats: 1,792
Default

Quote:
Originally Posted by supercooper View Post
Why would someone run BOTH the Bipes AND J&S?, is what im wondering.. Just for my own knowledge, as i will soon be a Squirter like most of you gays.
because one's a knock sensor and the other is a timing retarder based on rpm.
Braineack is offline   Reply With Quote
Old 07-24-2013, 05:57 PM   #7
Senior Member
Thread Starter
 
Join Date: May 2011
Location: Pennsylvania
Posts: 1,119
Total Cats: 33
Default

Quote:
Originally Posted by Braineack View Post
because one's a knock sensor and the other is a timing retarder based on rpm.
I know i wont need the Bipes, but Is MS capable of doing what the J&S does? or does that make things more complicated than necessary with the building and tuning?
supercooper is offline   Reply With Quote
Old 07-24-2013, 06:00 PM   #8
Senior Member
Thread Starter
 
Join Date: May 2011
Location: Pennsylvania
Posts: 1,119
Total Cats: 33
Default

im a little Irked right now.... the J&S is over $500.... the bipes is around $200 or so.... thats MS ballpark.... and MS is SOOOOOOO much easier to install, and adjust. Too bad i cant sell these for a quick $700. I want to track the PO down, and ask WTF? lol
SUPPOSEDLY, this guy has "built" many miatas..... This car must have been the first and worst. (its reliable, strong, and hasnt had issues yet.... but AIDS)
supercooper is offline   Reply With Quote
Old 07-25-2013, 09:51 AM   #9
Elite Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,658
Total Cats: 39
Default

Keep the J&S, unless you intend to get an MS3 with it's addition knock conditioner board the J&S absolutely beats the pants off MS1 and 2's knock sensing capeabilities
richyvrlimited is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Any pnp megasquirt for 2001 Big_gumby WTB 0 09-30-2015 04:34 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:10 PM.