Hey,

I was told that I would gain more horsepower if I put bigger injectors and fuel pump in my car before I tune. I have a h22 with injen intake, headers, magnaflow exhaust, test pipe, cam gears, aem pullies, aem fuel rail, skunk 2 throttle body, skunk2 itm, MSD ignition, and VACF2 controller. So would bigger injectors and fuel pump actually help my car or would it be no difference if I put them in or not. If so, what size should I go with. Thanks

 

No.

With your list of basic mods, the stock injectors/pump is sufficient enough. Throwing in larger injectors at this point will only bog you down and you'll possibly lose some whp (running too rich).

 

Ok, thanks for the advice!

 

I agree the fuel pump & injectors aren't needed at this point. You might upgrade the pump just for the peace of mind and get a regulator so can have a bit more control of things, but it's not necessary.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaH22a#1 &raquo;</TD></TR><TR><TD CLASS="quote">
cam gears, aem pullies, aem fuel rail, skunk 2 throttle body, MSD ignition, </TD></TR></TABLE>

FYI those particular parts aren't doing anything as far as power gains.

What header (no s) do yo have?

 

DC Sports. What do you mean they aren't doing anything?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaH22a#1 &raquo;</TD></TR><TR><TD CLASS="quote">DC Sports. What do you mean they aren't doing anything?</TD></TR></TABLE>

I mean exactly what I said...nothing as far as power gains. You're not gaining anything from them..no horsepower or torque or anything. Maybe .5 hp from the pullies.

Also with a DC sports header you definately don't need any fuel upgrades. It's just a tiny bit better than the stock header on an H22....if that Some higher end headers that make power definately require a good tune, but not really on a DC header.

 

What are some of the headers that make a lot of power because I was thinking about switching them because they came with the car when I bought it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaH22a#1 &raquo;</TD></TR><TR><TD CLASS="quote">What are some of the headers that make a lot of power because I was thinking about switching them because they came with the car when I bought it.</TD></TR></TABLE>

They're not going to be cheap, but RMF, SMSP, Hytech etc are some I can think of off hand. There's an Official Prelude header thread: https://honda-tech.com/zerothread?id=1437360