I have a 98 prelude that's automatic with the sport-shift. I have a few mods done like intake and ignition wires. I just purchased a VAFC and before I get it installed I need to know some good settings for it. I don't have dyno around here so I guess I would have to settle for some good settings until I can get it dynoed. Does anyone know some settings for an automatic Prelude, or do you have any advise on learning on how to set it with out a dyno? Please help

 

set all fuel settings to zero and keep VTEC x-over at 5500rpm.

this will simulate stock MAP signals. dont dicker with it til u get access to a dyno.

 

You really need a dyno. I've got a VAFC and it's useless until I can find enough time to take off work for some quality dyno time.
Do a search for VAFC here, it comes up a lot.
Like: https://honda-tech.com/zerothread?id=66246

 

On my Field VTEC controller I have it leaned out -10 at 5k and up. See the green run in my dyno plot Anyone get better gains with the vafc?





[Modified by DR, 9:04 PM 9/10/2001]

 

Got a graph of A/F ratio vs RPMs? I'm running way rich too.
Oh, and what are your mods?


[Modified by 4doorH22, 11:24 PM 9/10/2001]

 

No that is the only graph I have on the net. I have an AEM intake, DC header, Greddy EVO exhaust, UR crank pulley, and the Field VTEC controller on my '98 Type SH.

 

http://www.members.aol.com/ryoucold/...pexi/apexi.htm

 

That site is the bomb.

 

this site is awesome, we need more like this!!!! kick ***

 

Hey is just got my car outta the shop and plan on getting it tuned on the dyno I'll keep you guys posted on my setting.

 

VTEC-4700 rpm's
fuel- 1= -6
2= -6
3= -6
4= -6
5= -6
6= -6
7= -4
8= -4

 

Did you do the NTPOG OBD II defeat? So if I dyno my lude I should expect somewhere around 170 @ the wheels? And yes I know all cars are different.

 

Every car is different. Using those settings is a bad idea, because you could be too lean in some spots and have more tunability in other spots. My settings are from -2% to -9% in different areas. DYNO YOUR CAR with wideband O2, people!

~Seth
i/h/e/v-afc/msd
176whp/140wtq
1320: 14.67@96.2mph


<EDIT> Important!!- 5500 is the Apexi unit's default, 5100 is the Prelude default. Upon installation, move the rollover to 5100 on, 5000 off!

Also, I think that NTPOG workaround is hogwash. Leave your ECU connected. If you want a REAL OBDII workaround, get a Hondata stage 2 (find someone with a stage 4 to tune it in), then a GSR ecu and then you can really tune your car!!



[Modified by Noize, 2:08 AM 9/29/2001]

 

Damn V-AFC is the **** I still need to play with it some more. Love the graphics!!