a/f ratio

For discussing MicroSquirt (TM) configuration and tuning of fuel parameters (including idle valves, etc.).
Forum rules
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
fiat132
MegaSquirt Newbie
Posts: 28
Joined: Tue Sep 20, 2005 12:22 pm
Location: EGYPT

a/f ratio

Post by fiat132 »

hey guys..i am trying to tune my car and i was wondering at what a/f ratio can i expect to see black fumes from my exhaust.i have cranked the ve table all he way to 170 and still no smake...any ideas
Top
wes kiser
Helpful Squirter
Posts: 105
Joined: Tue Jan 03, 2006 1:49 pm
Location: Charlotte, NC

Post by wes kiser »

So you want black fumes?
2.3t Swapped RX-7, s200g turbo, ms3 sequential, LS2coils
Top
snillet
Helpful Squirter
Posts: 48
Joined: Tue Dec 06, 2005 12:43 pm
Location: Sweden / Kungälv

Post by snillet »

Excuse me for the a bit OT questrion, but do you (fiat132) run MS on a Fiat 132 ?

COOL MAN :!: :D

That is one funky and underestimated car.
Fiat has never been very appreciated for their larger sized cars, wrongfully in my opinion...

btw..
When you get black fumes....you are REALLY going rich, is my experience from tuning carbs. Some engines does not even run at higher revs when you´re that fat.
Peugeot/Citroen XU5 BDZ(4cyl 1.6litre) engine with 60-2 VR wheel decoding singel coil and dizzy spark and Magneti Marelli(solex) TBI. Msns-E hi-res 0.08f and E85(Ethanol) in the gastank.
Top
fiat132
MegaSquirt Newbie
Posts: 28
Joined: Tue Sep 20, 2005 12:22 pm
Location: EGYPT

Post by fiat132 »

yes it does...its a very wide spread car here in egypt...i am trying to boost it though....
i am asking about the a/f ratios because i dont have an o2 sensor...and i am going crazy with the thing
Top
Skiericski
Helpful Squirter
Posts: 35
Joined: Mon May 24, 2004 1:17 pm
Location: UT, Logan
Contact:
Contact Skiericski

Post by Skiericski »

What's the duty cycle on your injectors at 170 VE? Are your injectors big enough? And have you verified that fuel pressure is constant at those injector open times?
Top
fiat132
MegaSquirt Newbie
Posts: 28
Joined: Tue Sep 20, 2005 12:22 pm
Location: EGYPT

Post by fiat132 »

i am not sure....i am running 8*20 lbs injectors on a 4 cylinder engine....i havent checked the fuel pressure, the funny thing is that its showing 70 ve at idle !!!!1
Top
Post Reply

Return to “Tuning Fuel and Air”