Honda Civic DIYs and Civic Tech ChatHonda Civic DIYs and Civic Tech Chat - for the true gearheads! Bring your wrench, it's time for some Honda Civic DIY projects! Questions about problems with your car do NOT go here.
Welcome to civicforums.com!
Welcome to civicforums.com.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join civicforums.com today!
I highly doubt it. When I got my car it says it came with the VTEC-E and not regular SOHC VTEC. The only differences between the years would be cosmetic. All the mechanical parts and systems would be the same
__________________ "Speed has never killed anyone. Suddenly becoming stationary, that's what gets ya." -- Jeremy Clarkson (Top Gear)
every post says add-ons don't do much for out car because or the ULEV crap and the returnless fuel system. Can anybody tell me why the returnless fuel system affects performance? I've read a lot about it on the internet and all I can come up with is that it is just costly to maintain. [IMG]i/expressions/face-icon-small-confused.gif[/IMG]
Quote
[hr]Originally posted by: Smokie2k2LX
every post says add-ons don't do much for out car because or the ULEV crap and the returnless fuel system. Can anybody tell me why the returnless fuel system affects performance? I've read a lot about it on the internet and all I can come up with is that it is just costly to maintain. [IMG]i/expressions/face-icon-small-confused.gif[/IMG][hr]
The returnless system doesn't affect anything if you stay naturally aspirated..if you forced induction it does not allow for proper fuel regulation and pressure.
Quote
[hr]Originally posted by: Smokie2k2LX
every post says add-ons don't do much for out car because or the ULEV crap and the returnless fuel system. Can anybody tell me why the returnless fuel system affects performance? I've read a lot about it on the internet and all I can come up with is that it is just costly to maintain. [IMG]i/expressions/face-icon-small-confused.gif[/IMG][hr]
The returnless system doesn't affect anything if you stay naturally aspirated..if you forced induction it does not allow for proper fuel regulation and pressure.[hr]
Where is the valve that only allows uni-directional flow?(assuming it's a valve) if not is there any way to modify they system to allow back flow?
__________________ VTEC: Replacement for Displacement
It's not a valve. It's missing the whole return line. Acually there is a return line, its in the gas tank. The 6th gen had everything in the engine while we have everything right by the gas tank (fuel regulator, fuel pump...etc).
In order to have the return line in the engine you would need to move all that stuff in to the engine bay. I think it can be done its just that nobody that I know of has done it. Thats what I plan to do so that I can turbo my car. Even If I get a swap I would get the return line.
The EXs don't have the VTEC-E they have the regular SOHC VTEC. The HX has the VTEC-E.
__________________ "Speed has never killed anyone. Suddenly becoming stationary, that's what gets ya." -- Jeremy Clarkson (Top Gear)
Look at the Turbocharged RSX in the new(11/02) Import Tuner on page 36. Dynamic Autosports modified the fuel system to support boost."A polished collector tank sitting in the trunk area feeds the fuel system through the trunk-mounted SX 1200-hp fuel pump to ensure adequate fuel is supplied to the car even under the most rigorous driving conditions. Additional fuel hardware comes in the form of the 440RC injectors and the Walbro in-tank fuel pump."
I called DA, and whoever picked up the phone didn't know too much. he said he didn't know exactly what went into the fuel system, but the article did a pretty good job explaining it. I was like whatever and thanked him for his time and hung up. We have some damn good shops in MD and VA so they should be able to replicate this setup. BTW the HKS F-Con S piggyback engine management sytem tunes the A/F ratio.
I'll be attempting to do this before I get too serious about getting a turbo kit.
I went through and read an older Car and Driver (Oct 01) in the Porche 911 Carrera article. Porche also utilizes a Returnless Fuel System for the benefit of cooler fuel. Cooler fuel reduces the risk of predetonation which in turn increases fuel efficiency.
A good analogy is a circle. At one end of the circle, there's a fuel tank and the line that goes from the fuel tank goes into the engine and any unused fuel will be promptly returned BACK to the fuel tank. That's how older gen Honda's can easily use a fuel pressure regulator for boosted applications to increase the vaccuum pressure for fuel to flow to engine. With a returnless fuel line any such modifications cannot be done mechanically but rather electronically via a stand alone or piggy bag computer.
__________________ There comes a time in your life when you have to ask yourself... Is she wearing panties?
on the warm fuel thing...you can run the fuel through a fuel cooler before you hit the fuel rail...im not sure how much they cost, but i know they work well.
