fuel - Honda Prelude Forum

lude203 · 12-20-2010, 06:27 PM

i am starting my first serious build but i need some help on the fuel part and just need some basic input from the pros! plz lmk

so far ive got a jdm h23a non vtec (same thing as the h23a1 just a lil more power stock)
its got a short ram intake
dc header and downpipe
custom 2.5 in exhaust
crower stage 1 camshafts

my friend has some DSM 450cc injectors for cheap that i want to get
i was going to upgrade the fuel pump to the walbro 225 and get a aem fuel rail and a tune on chrome.

anyone got some input on this for me?
anyone know about how much i should be puttin down?

(before i get flamed with "h23s are weak for n/a ,get a h22" i am planning on boosting in the future thats why i chose the h23 platform and my h23a has never lost to a h22 anyway.... :P)

petern101 · 12-20-2010, 08:32 PM

l7You don't need those injectors until you boost.

With those current mods, you might be pushing 140ish - 150ish whp. Why not just go to a dyno?

Also, I don't know what h22's you've run, but most should beat you with those mods and untuned.

edit:

have you done any research? you know the AEM fuel rail does nothing even with higher hp turbo setups right?

lude203 · 12-21-2010, 01:38 AM

"You don't need those injectors until you boost."

Understood, the stock injectors will do for now then

With those current mods, you might be pushing 140ish - 150ish whp. Why not just go to a dyno?

idk i found this guys cardomain page and he has less stuff then i do and he made 165 whp with just an intake and the crower stage cams without a tune. he also disabled the aib which i dont think was a good idea..also i would just go to a dyno to check but i live in a crappy little town and theres like one tune shop around here and they charge a fortune and a half for a dyno run.
http://www.cardomain.com/ride/371248...prelude/page-1

"Also, I don't know what h22's you've run, but most should beat you with those mods and untuned."

i know its wierd... i used to have a 5th gen while i put my 4th gen away to sleep for a bit and for some reason my 4th gen would always walk on it! i always thought my 5th gen just had some problems or something but then i started driving my 4th gen again and i raced another 5th gen (manual also) and walked on it by a car or 2 and that was without the camshafts.....i guess the jdm version of the h23a1 just has more balls or something.

"edit:

have you done any research? you know the AEM fuel rail does nothing even with higher hp turbo setups right? "

didnt know...guess i dont need it then, just saves me more money lol..

im assuming all im gonna need then when i get the turbo setup is:

turbo, turbo manifold, downpipe, oil lines etc etc
fuel pump and the injectors to compensate for the increased air/fuel mixture and a tune correct?

btw what ecu do you suggest tuning on, ive heared the gsr ecu is the best because of the ability to keep the aib function.

--thanks for your input.

petern101 · 12-21-2010, 04:56 PM

All dynos vary and can read differently with the same car / settings.

A dyno is a tuning tool, not an absolute.

You will need alot of items for a turbo build, if you have never done one before, I suggest doing heavy reading in the forced induction section. You probably just want to go hondata or neptune, something you pay for and not a free tune ecu. P72 is probably the best but you'll probably never find one or find a faked one. Might as well just get a p28 or something similar.

xximadxx · 12-21-2010, 05:42 PM

do you live in bpt, ct ?

lude203 · 12-21-2010, 06:08 PM

Quote:

Originally Posted by petern101

"All dynos vary and can read differently with the same car / settings.

A dyno is a tuning tool, not an absolute."

yeah i knew that, i was just sayin...

Quote:

"You will need alot of items for a turbo build, if you have never done one before, I suggest doing heavy reading in the forced induction section. You probably just want to go hondata or neptune, something you pay for and not a free tune ecu. P72 is probably the best but you'll probably never find one or find a faked one. Might as well just get a p28 or something similar."

"

Yeah im getting a cheap manifold and downpipe off of someone and my boy has like a billion t3/t4 turbo's just laying around so i was just going to buy one off of him. and as for the oil lines i found some kits online that come with everything. gonna get the tubing,bov and fmi ordered online also. I found some air/fuel ratio, oil pressure, psi gauges online for pretty cheap too. im gonna get the dsm 450cc injectors and the walbro fuel pump and as for the ecu i think im gonna take your word and go with the hondata on that. other than that am i missing something?

Quote:

Originally Posted by xximadxx

do you live in bpt, ct ?

not in bridgeport, why?