I installed my rpw street headers today. I went for a short drive and they feel good. I will know more once I go for a good drive. They fit perfectly and only took a few hours to fit on my own.

http://www.pbase.com/image/32819161/medium.jpg
http://www.pbase.com/image/32819163/medium.jpg
http://www.pbase.com/image/32819165/medium.jpg

good work mate youll love em
give your ECU a good week to learn - when i put my pacemakers on it took about that long..
also you will notice (if you have an auto) this will learn and take advantage of more torque too - so it holds 4th gear up hills no worries at all..
mmmmmmmmmm extractor goodness :)

good work mate youll love em
give your ECU a good week to learn - when i put my pacemakers on it took about that long..
also you will notice (if you have an auto) this will learn and take advantage of more torque too - so it holds 4th gear up hills no worries at all..
mmmmmmmmmm extractor goodness :)

Hey GuRu. That would explain the really odd econo figures I got from my trip computer after pacemakers went in. Fuel consumption at under 80kph was really disheartening and unchanged above that. Its settled after 4 weeks and back to its old efficient self...even when old foot is planted hard now and again.

If ecu is learning, is it also doing any fuel-air ratio recals to compensate for the more efficient airflow? And then, why bother with a piggy-back ecu?

Good Choice... I rate this better over the PaceMakers...

Nice work. Let them bed in and then feel free to visit your local dyno :)

Street spec hey? Wonder how the newer design ones go?

Has anyone with the RPW headers noticed the same clearance issues as some people have had with the pacemakers? Just wondering over this :confused:

Owners with 3.5l engines shouldn't have any issues. It's the 3.0's that can have a problem.

looking great ! :cool:

so how much are the RPW items?

the RPW headers are fantastic - i had the Street headers for about 3 weeks and upgraded to the race headers when Dave had to test them - the differences being the Race Headers breather a little better in the higher RPM (above 4500RPM) and i tended to spend ALOT of time up in that rev range - so they work well for me!!

Manual

are the race headers available yet

are the race headers available yet

I spoke to David this morning.. apparently there was still an issue with the headers touching the starter motor (I'm sure that's what he said).. the manufacturer is doing another test fitting.. and he's expecting 2 or 3 units to arrive shortly..

So unless you own an AWD these babies are still vaporware.

how much for a set on a tr 4cyl. need to know price and what to do....brands aswell....needa get some.......

Looks sweet :D :D :D !!!

Keep us posted on an progress

The next step for me is lowering, I have my car booked in on the 8th of Sept with RPW to have the springs and suspenion replaced 60mm at front and 40mm at the rear, I should be just able 2 get it over the pits from what I have been told :) and as I am running 235s i'll have a camber kit put in aswell.

After that the next step in extractors, I am deciding wether to use the Pace Makers or the RPW racers, I think i am leaning towards paying the lil bit extra and having the RPW Racers fitted.

How much do these go for? $$

If its against rules and regulations, please ignore the above... :doubt:

How much do these go for? $$

If its against rules and regulations, please ignore the above... :doubt:
Yeah would be interested in seeing what the difference is between the two ( street design and race design) on a dyno run, and what the difference would be. Does anyone know ??????
Adam:flame:

Yeah would be interested in seeing what the difference is between the two ( street design and race design) on a dyno run, and what the difference would be. Does anyone know ??????
Adam:flame:

No one knows.. mostly because you so few people actually have the race design! And it's a time consuming and expensive exercise - The only way to do this accurately would be to fit both sets to the same (stock) car on the same day and do dyno runs, since every car is different.

Welcome to the RPW Headers Club (yee, I just formed it....).
Don't you just love the scream over 3 G RPM!

Actually - i had the dyno done with street headers and race headers - ok the car wasn't stock - but the dyno was same day / same ish temps / same dyno - and it pulled a 8hp difference in HP - not sure what the street headers put over the standed exhaust manifold - but yeah - and that isn't the final Race Design either

Manual

would it be worth disconnecting the battery while installing them this reset the ecu i have been told

Actually - i had the dyno done with street headers and race headers - ok the car wasn't stock - but the dyno was same day / same ish temps / same dyno - and it pulled a 8hp difference in HP - not sure what the street headers put over the standed exhaust manifold - but yeah - and that isn't the final Race Design either

Manual

That's a pretty big difference. Did you re-tune the e-manange as well to get that 8hp figure?

nope - that 8hp was prior to the Greddy tune - the greddy tune with the FPR pulled another 10 or so HP

Manual

u can see from the pic and as the name suggests, the street design have short primaries, these will give better low end and mid range performance good for the street. ther race design, pacemakers, wildcats, all have long primaries and will be best at high revs, hence the 8hp extra manual gained.
also the fact that the street design go 3 into 1 before going under the car would mean the problems of clearance are negated, as u have only the thckness of 1 pipe under there, not 2 bunches of 3.

u can see from the pic and as the name suggests, the street design have short primaries, these will give better low end and mid range performance good for the street. ther race design, pacemakers, wildcats, all have long primaries and will be best at high revs, hence the 8hp extra manual gained.
also the fact that the street design go 3 into 1 before going under the car would mean the problems of clearance are negated, as u have only the thckness of 1 pipe under there, not 2 bunches of 3.
Interesting. Dave was saying that the longer primaries would improve low RPM torque. Wouldn't the 3 pipes be next to each other so wouldn't matter if there were more of them going under the car? Unless it restricts where they can be positioned.

Interesting, the articles I have been reading show that the longer the primary pipes the more the torque is moved into the upper rev range.

Interesting, the articles I have been reading show that the longer the primary pipes the more the torque is moved into the upper rev range.
Online articles or magazines?

If online can you post the url's.

Headers By Ed is a good site about headers/extractors and designs etc.

http://www.headersbyed.com/bildbetr.htm

or alternatively http://www.headersbyed.com and you can sniff around it yourselves

thanks KB


From one of the first paragraphs.. Looks like Mitsu used the same "Bean counters"


“Bean counters” (accountant types) figure out that shorter headers are cheaper and easier to build so headers get shorter and shorter (so potential bottom end and mid-range power gains diminish or disappear).

thanks KB


From one of the first paragraphs.. Looks like Mitsu used the same "Bean counters"

he is only correct describing factory headers as being shorter to save money (how much really?) but that is not true of aftermarket stuff. most new 4cyls go 4 into 1 under the car, not many 4,2,1 designs around now. and see all the dyno charts to sell the new stuff, usually shows gains increasing at higher revs, bottom end needs a bit of backpressure.

anyway i cant take the whole idea hes trying to sell seriously. i can see ppl with a skipload of pipes and plates and all supplied by him after months of time wasted before giving up and buying a proven product.

he is only correct describing factory headers as being shorter to save money (how much really?) but that is not true of aftermarket stuff. most new 4cyls go 4 into 1 under the car, not many 4,2,1 designs around now. and see all the dyno charts to sell the new stuff, usually shows gains increasing at higher revs, bottom end needs a bit of backpressure.

anyway i cant take the whole idea hes trying to sell seriously. i can see ppl with a skipload of pipes and plates and all supplied by him after months of time wasted before giving up and buying a proven product.
Thats Mitsubishi i was talking about, not mitsiman or dave..

Thats Mitsubishi i was talking about, not mitsiman or dave..

yes that makes sense, factories like mitsubishi dont make the best headers they could, but i was talking about what the "headers by ed" guy is saying, if hes saying extractors like pacemaker, HM, manta etc are doing the same thing to cut costs. :doubt:

Damn Bean Counters!

So hows the RPW Headers going...worth it?

can you feel the gains alot? what car you driving?