even with safc II car is still running way too rich

[nissanfanatic]

Originally Posted by Me

Third, get a wideband or get on a dyno.

Originally Posted by 1viadrft

Dude... you guys gotta dyno-tune those SAFC-2's to get them to work properly...

Glad someone agrees with me.

Either dyno tune it or get a wideband. www.streetrays.com has some good deals on PLX widebands.

[HoosierDrifter]

do sr20dets have "map" sensors to measure engine vaccum? any other reason you guys can think of that would make it run very rich? again, i have a early 90s 300zx maf and atmospheric bov

i did the decel - air thing and it does a little better but still waaay too rich. any tips on how to correct this manually using the safc II?

[slideways...]

no the maf sensor is kind of instead of the MAP sensor
if a car has one then it doesnt have the other
the map sensor measures vacuum in the manifold(obviously) and therefore cant be used on a turbo engine.
the MAF sensor measures the MASS(not volume)of air going into the engine.

i have heard of people having problems with the SAFC solving this issue despite tuning and dyno time but i also heard the SAFCII solves it. i havent owned either so i dont know for sure

[orestes]

so MAP's sense vacuum and cant handle it when the engine's boosted? is that just some that arent made for it cant handle it or MAP's as a rule dont work for forced induction?

[iVteC_PoWeR]

Not trying to steal this thread, but stupid and quick question: Can someone explain to me what running rich means? Never had the problem or known anyone that has so I would like an explanation please.

[240SXSlideStar]

The fact that MAPs can't be used on turboed engines is bullshit with capitals: B-U-L-L-S-H-I-T! Civics use MAPs and they keep it when turboed, and when a MAF car converts to a standalone....it goes to a MAP also!!! And last time I check, all jap D1 cars (except for some AE86s) were turboed and most if not all of them are using a standalone.

[orestes]

yeah ok thank you slidestar that threw me for a loop trying to figure that out. man i wish i had the cash to do more than a fairly simple turbo setup......mmmmmm standalone....mmmm

[orestes]

Originally Posted by iVteC_PoWeR

Not trying to steal this thread, but stupid and quick question: Can someone explain to me what running rich means? Never had the problem or known anyone that has so I would like an explanation please.

too much fuel. lean is not enough fuel. lean is very dangerous especially with forced induction you will blow the motor. but rich is not good either as you are losing a lot of power.

[nissanfanatic]

MAP=Manifold Absolute Pressure. AKA speed density. No real conforumation on which is better. But the best part of a MAP sensor is you only need to upgrade it if you exceed the pressure limit. No amount of power can max it out as long as its withing the specified pressure limit. AKA, you're not gonna max out a 5 bar map sensor.lol The phatka-t car uses a MAP sensor. I think its more ideal for forced induction. But some don't.

Rich=too much fuel entering the engine. Cons to this are loss in power and quicker wear on the engien. The excess fuel can wash oil off the cylinder walls causing more rapid wear.

[NiSmO_zt]

yeah, when i saw the "map sensors dont work on turboed cars" i was like bullshit! slidestar and fanatic are right, cause i know for sure that the new srt-4's uses a map from factory, not that i should , i hate dodges, but a friend of mine has one.

[slideways...]

well ok it was an uneducated statement
i just thought of all the factory turbo cars i could think of at the time. also the older japanese WRXs used speed density system. so IGNORE any dumb statements i make. i use the mac10 method of giving advice-shoot enough bullets and eventually youll hit something

[240SXSlideStar]

Originally Posted by slideways...

i use the mac10 method of giving advice-shoot enough bullets and eventually youll hit something

Haha that's good.

[nissanfanatic]

Thats bad.

Think of your target in front of a croud of innocent people.....

[Chuki_breath]

yea people want info not what you think may be right. And yes many older cars didnt come with maps...but that doesnt mean its not good for them.