13.8 a/f ratio, why?
#21
Supporting Vendor
iTrader: (33)
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Rich--WTF are you talking about? What do you think my post, "just get a fuel pump." (number 8 in the thread) meant?
to tune the BEGi FMU, you start at WG pressure. tune the overall pressure first and the rising rate second. then add the MBC and increase boost until you're out of fuel, then go back down a smidge. that's it, and that's all. no fuel pressure gauge required. it would take longer to install a fuel pressure gauge than it would to actually tune the damn fmu. i think the last time I had to do it on my car, it took me about 10 minutes to dial in--and I nailed it pretty good.
now, say you get your fuel dialed in, and 6 months later you're running lean up top. that's when you should employ a fuel pressure gauge as a diagnostic tool.
now I don't see a begi t28 making 7-8 psi post intercooler w/o help of a mbc. anything's possible, but I doubt corky's shipping the turbos out with a 10 psi wg. so the op needs to pull his mbc. his stock pump has no chance of supplying enough fuel in a pressure based system.
to tune the BEGi FMU, you start at WG pressure. tune the overall pressure first and the rising rate second. then add the MBC and increase boost until you're out of fuel, then go back down a smidge. that's it, and that's all. no fuel pressure gauge required. it would take longer to install a fuel pressure gauge than it would to actually tune the damn fmu. i think the last time I had to do it on my car, it took me about 10 minutes to dial in--and I nailed it pretty good.
now, say you get your fuel dialed in, and 6 months later you're running lean up top. that's when you should employ a fuel pressure gauge as a diagnostic tool.
now I don't see a begi t28 making 7-8 psi post intercooler w/o help of a mbc. anything's possible, but I doubt corky's shipping the turbos out with a 10 psi wg. so the op needs to pull his mbc. his stock pump has no chance of supplying enough fuel in a pressure based system.
#22
http://www.14point7.com/JAW/JAW.htm
So you can buy the Bosch LSU 4 Wideband O2 sensor for around $50? Is that right? And it will work with the stock computer? Sorry if that is a dumb question.
http://wbo2.com/lsu/
#24
Elite Member
Thread Starter
iTrader: (30)
Join Date: Aug 2007
Location: Va Beach
Posts: 7,329
Total Cats: 12
Is it possible to tune the car with one of those ricer pepboys off the shelf a/f meters? Would I be able to get my a/f ratio even close with one of them, or are they a total waste of time?
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
#26
Elite Member
Thread Starter
iTrader: (30)
Join Date: Aug 2007
Location: Va Beach
Posts: 7,329
Total Cats: 12
thats what I thought, Thanx
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Thread
Thread Starter
Forum
Replies
Last Post
graexodus
Miata parts for sale/trade
9
10-25-2015 03:34 PM
Motorsport-Electronics
ECUs and Tuning
0
09-05-2015 08:02 AM