i just installed a type r header. I dont feel any gains. How can i tell the difference between a jdm or a usdm one.

 

visially

 

Dude there is no need for 4 different topics for the same B16A2 questions.

I'll Answer your Q's one by one:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote"> just installed a type r header. I dont feel any gains. How can i tell the difference between a jdm or a usdm one. </TD></TR></TABLE>

If you mean OE Honda JDM vs. USDM, it's easy - the USDM Type R doesn't even use a header at all, but a cast-iron manifold.

If you mean it's a DC Sports and you can't tell between the "JDM" version or not, that's not too hard either. The "JDM" version will have a 2.5'' collector and will require some custom fab to install with your cat/exhaust. The standard header bolts right in, but the JDM version requires a 2.5'' adapter if you want to bolt it in place.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Im getting pretyt good gas milage with my car, it dosnt seem to bog and i guess im getting enough fuel. SHould i swap in a fuel rail. basic bolt ons and a cam. would it make a differnfce. If not, why the hell do people do it </TD></TR></TABLE>

Fuel rails are pointless IMO on stockish B series engines with only bolt-ons. Unless you have serious fuel needs for a fully built N/A or boosted engine, a fuel rail in itself won't do anything for power gains.

People do them because it's yet another part to list for their cars at car shows.

I personally have a fuel rail on my B18C5 swao ONLY because the original owner of the Type R put one on it because it actually was a show car.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">The car has type r components, and i feel that a p73 type r ecu would best compliment my setup.
B16 with cams, cam gears, header, intake , exhaust, pullys, intake manni and type r tb...now do i run a p28, or a p73</TD></TR></TABLE>

I would get a jumper harness and run a P28 equipped with a programmable system like Crome, Uberdata, or Hondata. This will be ideal for your car because it can be tuned for your very specific set-up. "Chipped" ECU programs are a general deal, not specific, and an OBD2 P73 won't run it nearly as well as a programmable P28 set-up. Also you can get partial throttle tuning for awesome gas mileage with a Hondata, Uberdata, or Crome set-up.

I ran my B18C5 with the stock P73 ECU and the P28 (reprogrammed for my engine) ran it much better.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">i put a type r intake mani and tb on. I feel a bit more pull. when vtec hits. Should i swap out the 62mm tb and put a 65 mm or is it too big
</TD></TR></TABLE>

Leave the ITR TB on there. 9 times out of 10 TB "upgrades" rarely improve whp or torque. They usually improve things such as throttle response, but you'll never be able to prove it because there's no test for that.

BTW:

If you get any sort of programmable P28 set-up it is important to have it street tuned at partial throttle for good gas mileage, but even more important to have it dyno tuned with your cam gears as well to maximize your gains.

All of the mods in the world don't mean anything if it's not tuned.

Modified by B18C5-EH2 at 8:36 AM 7/22/2005


Modified by B18C5-EH2 at 8:45 AM 7/22/2005

 

You tell the gains by going to a dyno. You get a pull before the new header and then one after you put the ITR header on. Please use the search button at the top right hand corner of the page and have fun!