i will soon have a s5 ported intake with s5 injectors... i am putting it onmy s4 motor..... how much horse should i be expecting to the wheels?
significant amount? i hope.... if not the s5 intake will just be a cosmetic modification
thanks guys
jack

 

are you using the stock ECU? if so how are you making them compatible?


EDIT i mean the injectors and the ECU

 

see i didnt know... all i know is that i am getting them both ... maybe i will just set the intake in ..... but like i said its ported.... i figured more air=more fuel huh? but i cant put the s5 injectors on without upgrading the ecu? or getting a piggyback/standalone??
thanks
jack

 

could i run stock injectors with the ported s5 intake ? would the injectors pump enough fuel ?? if so then im just gonna leave it until i get an safc....
jack

 

very true if your running S5 injectors with an S4 ECU then you need to run 10 wattx10ohm resitistors inline with the S5 injectors...it would be much easier to use your old injectors with the S5 fuel rail....how much is it ported? a street ported N/A can have anywhere from 200-250hp depending on the mod and how much it is ported... if your concerned about fuel delivery then upgrade the fuel pump before you go with bigger injectors....also you may try and use 93 or 91 octane to prevent detenation.....its been heard that 13b N/A race cars use 80 octane gas an have more power gains than more octane gases..but only driving will tell..

 

no no .... the intake is the one ported ........ not the engine.... stock ports all over on the engine.....

 

Just keep the stock injectors then , when N/A guys get SAFCs they gain more power by leaning the power ban out....

 

intake is ported hmm alot... lol sorry for the choice of words... gasket matched if im not mistaken... my friend did it and im going to buy it off of him ..

 

so s5 fuel rail and s4 injectors am i correct? well again how much hp will u think i will have seeing my mods + this ported manifold..? just wondering... sorry

 

sorrry I have no Idea, I believe that the AFM is the restrictive part in this combo, the S5 is less restrictive but you must rewire to install it, with your current setup I would say no more than 10hp......and btw stay away from glass packs they will melt in 2 months, if you get a silencer make sure it is packed with SS wool

 

the glass packs.... hehe i know they will melt but im dealing with a budget(very low budget) so itll be a temporary fix for the time being.... only thing that will be shitty is the loud annoying sound if and when the fiberglass melts... thanks bro....

now what do i rewire u say ?? sorry when it comes to electrical im an illegal alien
jack

 

So all your doing is a intake change ??? Geez I would guess mabey a few at the wheelz... Lol you will never need a fuel pump for that. But hes right the fuel pump should be first because the injectors might actually lower the fuel pressure if thier outflowing the pump.

Get a S-AFC and lean it out 5-11% and make around
4-8 rwp more.

Keep your S4 injectors on the S5 rail. Sell your S5 injectors to me that is if thier clean. 20 bucks for 2

The N/A can handle around 220rwp mabey more with just a S-AFC and more with a T11 pump.

 

i know the n/a pump can hold 250hp but i was just wanting to know about the injectors.... i wish i could get an safc but im strapped for cash...
jack

 

There is a thread on the S5 intake conversion....hmmm let me go search for you!

 

https://www.rx7club.com/forum/showth...ntake+AND+swap

and here:

http://homepage.mac.com/carldavis/intake/intro.html

Dyno sheets and Everything..wow took me a whole 2 minutes too!

 

WELL I WAS ASKING FOR ESTIMATES on a ported intake and if to use s4 or s5 injectors....

 

Bigger intake ports may well lead to decreased HP numbers. Until you test on the flowbench or dyno homebrwewd porting is a shot in the dark. BIGGER IS NOT NECCASARILY BETTER

 

WTF??? Triple post....sorry!