Who has boosted without timing control? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 11-07-2006, 06:55 PM   #21
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Feb 2006
Location: Mesa, AZ
Posts: 999
Total Cats: 0
Default

fatty, your buddys over at jaycar, dont they have some kind of pulse modifier?? maybe that could do it
adbradley is offline   Reply With Quote
Old 11-07-2006, 07:03 PM   #22
Junior Member
 
Join Date: Nov 2006
Location: Australia
Posts: 120
Total Cats: 0
Default

yeah i looked into that. the problem with the jaycar pulse adjuster is that it adjusts the pulse up or down in frequency. you don't want to do that to the cas signal. you want to leave it at the same frequency, but move it forward or backward in time ( effectively phasing it out from the tdc signal).
fatty is offline   Reply With Quote
Old 11-07-2006, 07:09 PM   #23
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Feb 2006
Location: Mesa, AZ
Posts: 999
Total Cats: 0
Default

OHHH... that is a bit differant, damn why do bipes have to be so expensive
adbradley is offline   Reply With Quote
Old 11-07-2006, 07:15 PM   #24
Junior Member
 
Join Date: Nov 2006
Location: Australia
Posts: 120
Total Cats: 0
Default

my idea was to buy a switch that kicks in at a pre-set rpm (again from jaycar) , you could run this off the tacho wire. then have some kind of digital delay kit (altronics have one for example) in the loop of the switch, and install it in on the cas wire.
could work, but i dunno how the switching in and out would affect the ecu.
alternatively you could try to get a variable delay that somehow varies according to rpm or something. anyway it all got too hard for me.
fatty is offline   Reply With Quote
Old 11-07-2006, 07:23 PM   #25
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Feb 2006
Location: Mesa, AZ
Posts: 999
Total Cats: 0
Default

well, i was talkin about this with lazzer408 one day, hes an electronics nut, he had came up with a way to do it using a timer intigradet circuit, but it was a bit beyond my understanding.
adbradley is offline   Reply With Quote
Old 11-07-2006, 07:23 PM   #26
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Feb 2006
Location: Mesa, AZ
Posts: 999
Total Cats: 0
Default

if you have a memory modual writer you could just copy the bipes unit, but that wouldnt be right would it
adbradley is offline   Reply With Quote
Old 11-07-2006, 07:38 PM   #27
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

sounds like the parts and time to make something similiar are going to be more than the cost of the bipes itself. being cheap is good but i prefer to be stinge and buy good parts at good prices
magnamx-5 is offline   Reply With Quote
Old 11-07-2006, 07:55 PM   #28
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Feb 2006
Location: Mesa, AZ
Posts: 999
Total Cats: 0
Default

yeah.. i usualy end up buying crappy parts
adbradley is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
FS/FT: 03.5 Mazdaspeed Protege leatherface24 Cars for sale/trade 15 10-16-2015 12:35 PM
The "other" spool question stefanst DIY Turbo Discussion 44 09-28-2015 08:16 PM
Project DDoS: '99 "Budget" boost build ProjectDDoS Build Threads 1 09-09-2015 02:52 PM


Thread Tools

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 06:34 AM.