13bmaniac

iTrader: (5)

hello i have a 93 fd with the follow mods:
stock greddy t78
3 row intercooler
aem ems
koyo radiator
pettit stage 3 street ported engine
1600cc sec 850 primaries
hks skyline fuel pump
and more like hks twin power clutc etc
i dynoed the car and achieved 437hp@15psi i want to know how much can i push the turbo on for more hp running on pump gas but the detination will be heavy
what do you recomended me water injection?how much canin push with water injection?or go to race gas?

thanks

armanielite

whats your a/f ratio @15psi?

iceman4357

iTrader: (2)

you should be able to push it up to 17 psi on 93 octane

darkphantom

iTrader: (2)

i dont want to sound dumb but whats this

aem ems (is that a stand alone system)


and also ive seen most people use 2 fuel pumps to power a T78. just curious if its mandatory to do that



as far as your question. i would recommend water injection but dont tune for it. That way ill act as an insurance for your car. Ceramic rotors are also becomming some-what popular. Ask Batman (forum member). that will also help against denotation

-J

ErnieT

iTrader: (2)

Your better off being safe that trying to get that extra hp especially on pump gas. But if you really want to do it, try a methonal inj. kit from
.http://www.snowperformance.net/prodd...p?prod=Auto020

This is the one Im gettting.

coolingmist

Our kit was designed on a 94 Rx-7, originally on CA 91 octain. You can see install pics from about 2 years ago on a 94 we installed it on here:

http://www.coolingmist.com/installation.aspx

since that time the components have changed but the concept is the same. Our wiring diagrams and so forth are here:

http://www.coolingmist.com/instructions.aspx

We have found great results from every car that has installed this. We had 4 evo's dyno over last weekend that gained from 27 to 57 HP with the water injection. Most cars can run 3-5 extra lbs of boost also.

WE have run many group buys on this forum and have probably more than 50 members with our kits, they are proven.

13bmaniac

iTrader: (5)

ok thanks for the advices, but darkphamtom what you mean when said"i would recommend water injection but dont tune for it. That way ill act as an insurance for your car"
and ernie t where i cam buy the methanol reposition?

what will be best then water injection?or methanol injection? or the do the same job.
i heard the ceramic rotors but is too lñate for me maybe in the next pettit engine

RexRyder

iTrader: (10)

I think what he means is, although you might get more power by leaning out the car during water injecting, dont do it, just leave it the way it is.

sleeperfc

if you spray just water then maybe it wont hurt to spray without tuning...

now if you run a 50/50 mix of water meth the aded fuel will send your a/r well below 10:1.

i have been there for the tuning of my buddys supra, and his brothers is300. When the water/meth comes on without tuning.. the HP goes down.
The is300 lost 20hp due to very rich conditions.
We ended up taking out 22% fuel (haltech) and the a/f got back to 11.5:1.

the supra knocked at 18psi without it... he runs 24psi with it.
the is300 knocked at 9psi without... he runs 16psi with it.
both are on 93 pump. 50/50 water meth.

this is a good thread.
Alcohol injection, water injection, octane, and your FC

20lbs safely with water/meth injection+pump gas

13bmaniac

iTrader: (5)

well thanks again for the help i think now the best way will be 50/50 water methanol and incresa the boost a litlle bit so i can achieve the 450 480hp that will be fayrly enough for my street hunts.
so the idea then is to cool the intake charge and the ar charge of he turbo to pull more psi safely?correct me if i am wrong

sleeperfc

lower intake and egt temps.... less prone to detinate. Some say the meth adds octane... but keeping the intake temps to 80F when it was 103 in the shop... at 24psi. with egt right at 700C is the kinda performance numbers im looking for.

i was shocked... and sold on it right then.