gona be getting a prospeed header within the week and was wondering if i would need a fuel pressure reg or anything?

 

I recall that the last two preludes that put them on their cars leaned out when they were tuning their cars, therefore, why not be safe and get a fpr

 

hehe ok , which one you guys reccomend? id go aem but with theirs i need their fuel rail as well

 

aem's good!

vafc is good too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kal &raquo;</TD></TR><TR><TD CLASS="quote">aem's good!

vafc is good too.</TD></TR></TABLE>

GO with HONDATA its the best!!!

 

i wna try and keep it cheep

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by es_squared &raquo;</TD></TR><TR><TD CLASS="quote">i wna try and keep it cheep </TD></TR></TABLE>
http://www.pgmfi.org

 

i recommend going with Hondata or AEM. Either one will work!

 

hondata eh.. which one you guys recommend

 

why spend the money on Hondata, its like an "A La Carte Ecu". if you are going to spend the money...save some extra and buy AEM. Thats my $.02

 

the AEM sytem cost a wad load, plus im not that hardcore. i think ima jus go with hondata s100

 

does anyone have a dyno sheet of a prospeed header before tuning, i need an idea of where the header causes a/f to lean out the most.

the header's been in for a while untuned, (yeah yeah, i know. anyone wanna pay for a p72 + s200?) and there's a trackday coming up. i'm not gonna beat on the car at WOT all day with the fuel maps as they are now, however, i can get my hands on an emanage for a temporary period of time, and was wondering where i could hypothetically add fuel to cover my *** on the detonation tip.

yeah, kind of a dumb question, and kind of a dumb idea, but i am dying to go drive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by es_squared &raquo;</TD></TR><TR><TD CLASS="quote">the AEM sytem cost a wad load, plus im not that hardcore. i think ima jus go with hondata s100</TD></TR></TABLE>

Good idea

Can anyone tell me off the top of their head
if the s100 has nitrous control as well?

 

Why not just use a VAFC if your just doing mild mods? You can find a used one for around $200 if you look hard enough.

I know you have a lot more flexibility w/the hondata setup but everyone seems to be bashing theri VAFC setups and dumping them for a Hondata system.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ludebehavior85 &raquo;</TD></TR><TR><TD CLASS="quote">Why not just use a VAFC if your just doing mild mods? You can find a used one for around $200 if you look hard enough.

I know you have a lot more flexibility w/the hondata setup but everyone seems to be bashing theri VAFC setups and dumping them for a Hondata system.</TD></TR></TABLE>

i want to be able to adjust timing and a/f, and ideally not do it by tricking the MAP sensor. i also need to squeeze as much hp out of the engine as possible, and i don't think a VAFC is the right tool for that aim. I don't mind spending the money, so the hondata will be in soon enough, just not by this friday. so i need a quick solution, if there is one.

 

I wasnt really questioning your judgement, Im just tryin to figure out if purchasing a VAFC II was worth it or should i have saved for the p28-72 s200 setup.

WHen i first started doin research me and my friends all kinda concluded on a VAFC but after doin alittle more research and becomming members on HT I guess the hondata setup is better in terms of gains and function.

Is tricking the map sensor etc really that bad for your car?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ludebehavior85 &raquo;</TD></TR><TR><TD CLASS="quote">I wasnt really questioning your judgement, Im just tryin to figure out if purchasing a VAFC II was worth it or should i have saved for the p28-72 s200 setup.

WHen i first started doin research me and my friends all kinda concluded on a VAFC but after doin alittle more research and becomming members on HT I guess the hondata setup is better in terms of gains and function.

Is tricking the map sensor etc really that bad for your car?</TD></TR></TABLE>

well, the VAFC II can be suitable for a lot of people's needs, considering how much a hondata setup can cost. and with light mods the difference between hondata and a VAFC can only be a few whp here and there (depending on who's tuning it) so it comes down to a $/hp thing i think. there's also the added trouble of trying to pass smog with a hondata in california.

fooling the map sensor isn't harmful for the car, it's just that from what i've read, it's more efficient to simply add more fuel to the map. also, OBD II being what it is, it can be frustrating to not be able to tune the engine to partial throttle.

 

....I thought you could tune the fuel maps w/a VAFC II. By the way, my car is OBD I.

Whats the the benefit of being able to tune @ partial throttle aside from being efficient?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ludebehavior85 &raquo;</TD></TR><TR><TD CLASS="quote">....I thought you could tune the fuel maps w/a VAFC II. By the way, my car is OBD I.

Whats the the benefit of being able to tune @ partial throttle aside from being efficient?</TD></TR></TABLE>

you can tune fuel maps with a VAFC, however, when you're tuning the maps for partial throttle in an OBDII car, all of the tuning gets erased as the car is running in "open loop" which is using the OE O2 sensors to keep A/F as close to 14.7 as possible. at WOT the ECU switches to "closed loop" which determines how much fuel to add based on a set map, so w/ obd II you're really only tuning the closed loop map, since it's the only one where your alterations/tuning adjustments will be seen.

but, since you have an obd 1 car, you can tune partial throttle and not have these settings be overidden by the ECU.

i would want partial throttle to be tuned for my particular application, because i'm not always flat out/@ WOT when i need the extra power. also, it makes more sense to have a consistent reaction to my input of pressing the gas pedal.

 

You got your "open-loop" and "close-loop" backward. WOT = open.

 

uberdata and spend 1/4 as much.. and tune it yourself.

 

So in a way the HOndata system is most beneficial for OB2 cars who want to be able to tune when they arent WOT (close- loop) and OBD1 cars can get away with usin the VAFC and basically get close to the same numbers with maybe less power gained from tuning?

 

anyone have any idea on how much fuel to add? i don't mind super rich, i just don't want the engine to blow up.