JLFletcher

how many people would be interested in this? found a place that will be doing mine. more info on friday night after they see the vehicle for cost estimate. im going catless but will have a test pipe incase i need one. also going with a dual exhaust same look as factory just more flow! slightly louder. will post before and after dyno results after i get some.

vip_inspire

if your going boost straight pipe is the way to go. got to love living in florida with no emissions testing

theART

ok good luck with that 3" and test pipe on our engine :o)!

Lets us know how it'll work out.

JLFletcher

talked to my shop today about it. looks like 1,100.00 to 1,400.00 for a true 3inch mandrel bent turbo back depending on what you choose for options. high flow cat no cat tip configuration. ect... i will try to post picks asap price might come down if we can get a group buy going thinking 10 people should do it. im hopping to get my rdx down for the prototype and dyno proof friday april 1. no fool jokes either.

windowlickingood

Hope this car doesnt suffer from boost creep from being catless. assuming that your going to get tuned after the down pipe install?

wspy

It does'nt...well not enough to affect it adversly

JLFletcher

no boost creep on this setup as it dosent have a waste gate. VGN is how we get boost earlier and how exces flow is prevented later.

Mr Marco

oVER KILL! This is a 2.3ltr SUV for Christ sake. $1,250??? even if you got 5hp extra, and I doubt you will, that's $250 per hp.

SAVE YOUR MONEY

JLFletcher

wow thanks for your suport. so how much does a turbo back cost on an evo or a wrx? looked on summit and for a cat back the range was 1189.00-658.00 for a 2008 wrx. and 920.00-603.00 for an evo and thats for a catback!!! im looking for suport to get a group buy for 5 to 10 of these.
these results are from pang co when he did a catless set up read for more info
Update
Hp gain with downpipe & midpipe 36.5whp
Tq gain with downpipe & midpipe 23.1wtq

windowlickingood

For my sti. I was able to get a new catless down pipe for 200 and that's for a quality one. That was on a group buy too for an invidia . People that own these cars really don't shop on summit. Also a nice catback can be had for around 400. And those numbers your claiming in hp gain can not be had with just changing out the downpipe alone you have to get tuned for those kind of numbers. This is not your typical honduh where you can just bolt on power and even then a catback alone will not give you that much

windowlickingood

According to this http://www.acuraoemparts.com/delray/...All&vinsrch=no . it sure looks like it has a wastegate. Marked as b-1-10 on top of page. The what ever u call it is just another style of wastegate

wspy

You are wrong here sir! These are actual real world numbers that were documented by Pang who has a reputable shop in Denver. He did all work himself and NO TUNING was performed. Both cats were eliminated using a fabricated downpipe and the factory exhaust. A/F ratios changed as a result but remained safe!

windowlickingood

Is there a dynograph sheet that's available to prove this? Like one that plots boost, hp, tq and afr?

wspy

Read through this:

https://acurazine.com/forums/1g-rdx-performance-parts-modifications-162/built-3-downpipe-cat-deletes-682724/

jbillakdsm

I have to say that a 3" system on the RDX seems like overkill (noise/clearance)for a SUV. I've seen multiple systems from the DSM (Eclipse, Talon, Laser, EVO) world and 2.5" can do most of your daily driver needs. I run a 2.5" turbo back on my Talon and it cost me $800 with a high-flow cat and a single exhaust.

My big problem would be noise and the fact that I'm screwing around with a perfectly good $30K SUV exhaust, not a $5k compact sports car. If mine was rotting off I would consider an upgrade. Otherwise, I go look for a cheap tinker toy to make loud/fast.

JLFletcher

Quote:

Originally Posted by windowlickingood

According to this http://www.acuraoemparts.com/delray/jsp/prddisplay.jsp?inputstate=5&catcgry1=RDX&catcgry2= 2008&catcgry3=5DR+RDX+(TECH)&catcgry4=KA5AT&catcgr y5=TURBOCHARGER&ListAll=All&vinsrch=no . It sure looks like it has a waste gate. Marked as b-1-10 on top of page. The what ever u call it is just another style of waste gate

This is what my suv comes with and yes the vacuum/boost actuated spring pot is in fact b-1-10.
http://www.streetfire.net/video/vari...rbo_191918.htm

If you don’t like what im trying to do here GTFO im trying to offer those that want more from there rdx the opportunity to get it.
iirc pang co also picked up some mpg with this mod but he did a cpe intake which changed the afr so that could have been it also.
oh and its 40$ per hp and thats at the hi end

thanks wysp for the help sucks when you have haters poopooing you

windowlickingood

ok after seeing that downpipe, touche!. i didnt realize that stock downpipe was such a fail design. Its like it was used to detune the car.

wspy

You gotta luv newbees ........to the forum that is

windowlickingood

^ well you cant blame me for not believing. its not everyday that you see a downpipe that produces those results with out tuning.

JCRDX11

I still can't believe up to this date that no company can offer a downpipe for our RDX.

JLFletcher

not like i didnt try to get something going i had 0 pm about this. on may 2nd i go to basic so ill get one for myself when i get back and get the hondata. ill make sure that i keep in touch with doug at hondata that way if he needs a cat less three inch ill be more then happy to send him one. should have listened to him to begin with. wait till warrenty has expired then tell people about this stuff.

Mr Marco

It's an SUV.

So what happened with Pang Co? Was that a one off thing?
If those numbers are true, that the largest gain was from the "intake mod."

JCRDX11

Actually it is a CUV - A crossover is a vehicle built on a car platform and combining, in highly variable degrees, features of a sport utility vehicle (SUV) with features from a passenger vehicle, especially those of a station wagon or hatchback.
Using the unibody construction typical of passenger vehicles, the crossover combines SUV design features such as tall interior packaging, high H-point seating, high ground-clearance or all-wheel-drive capability — with design features from an automobile such as a passenger vehicle's platform, independent rear suspension, car-like handling and fuel economy.
A crossover may borrow features from a station wagon or hatchback such as the two-box design of a shared passenger/cargo volume with rear access via a third or fifth door, a liftgate — and flexibility to allow configurations that favor either passenger or cargo volume, e.g., fold-down rear seats. The crossover may include an A, B & C-pillar, as well as a D pillar.
Crossovers are typically designed for only light off-road capability, if any at all.

Plus members on this forums like to gain a few more ponies on their RDX for a better kick.

If not; we would have all gotten a CRV!

JLFletcher

READ > https://acurazine.com/forums/showthread.php?t=682724

Update
Hp gain with downpipe & midpipe 36.5whp
Tq gain with downpipe & midpipe 23.1wtq

Hp gain with K&N conical filter mod, downpipe, midpipe 39.9whp
Hp gain with K&N conical filter mod, downpipe, midpipe 25wtq

wspy

JLFletcher,
Ok when you get your DOWNPIPE made [along with the O2 fix], I will be in for one of them!
I already have a custom mid pipe [no secondary cat].
I'm gonna keep the stock system from the cat back like Pang did.

Been waiting for a DOWNPIPE since about Aug '08.

JLFletcher

sure thing sorry to make you wait till oct or nov to get one but i have to get funding together for mine and then get the # posted. see you in 18 weeks.

and yes pang co made a one off peice that was cut weld cut weld cut weld mandrel bend weld.

droebuck

This was the funnest post I have ever read on this board. You guys are MASTER deBATERS lol, great discussion. I just got my ATLP (bought it off a guy here). I remember Mr. Marco asking him once why he was selling and he never answered. Turns out he bought a 350 z and gave the RDX to his mom and she wanted all the mods removed. Can't wait to put it on, but a little sad, I think ive run out of things I can do to this car. May have to get a G 37S and see what fun is to be had with that car.

Kaze66218

Hey that is a good find, mine sounds nice... noticed I really didn't seem like added power till I saw the dyno.

I didn't post it because I dont want mine's bigger to ensue; would for the A:F ratio though alone.

to RDX, the ATLP exhaust is now faster going from 1000-6500 rpm. I hope with the Dp I get bigger numbers tho. I am getting one made with 2 bungs tho don't feel like splicing the ecu harness for a:F(lambda)

by the way I installed my exhaust on my back in 90* weather it's pretty simple, hope you got some gaskets too, from usmfo. Glad it worked out for him , admins were hatin' on him trying to sell in the ATLP exhaust thread. anyway if you didn't the size is 2.5 by 1mm exhaust gasket and i think auto stores carry them.

For Remove and install, push and pull is how you get the can and pipes off the hanger bushings. just need to have the ability to curl or bench 35 lbs. Slides right off. save your dough for other things

I believe you can handle it. Oh and take the old exhaust to a recycling/scrap place and you can get paid for it.

droebuck

Great info, and thanks for the gasket size. I am a little worried though about getting under there, the springs dropped me an inch or so and i'm not the smallest guy. Gonna give it a shot though. i'll let ya know how it turns out. BTW, there was no welding involved at all?

Kaze66218

I am beefy guy too, at 200, claustiphobic warning, an inch changes things, but find some 2x4's or 2x6 and drive up on them before you start. You get your inch back now and there was no welding took about an hour to fig out how to get it off without tearing my knuckles up, which will happen if not wearing gloves, think of it as a rites of passage, from ATLP,lolz.

PS: Do it while it's cooled down and take your time

Mr Marco

Bone stock RDX is only 154whp? That's a 36% loss through the drivetrain. Possible, there is a couple hundred pounds of metal that needs to be moved before the rubber hits the road(I removed an broken A/C compressor unit from a toy I once owned and improved my 0-60 times by 1/2 second)!
What are the other lines on this dyno chart representing if the max hp is 154? Nevermind, those must be the "after" runs.

wspy

Marco, its obvious you didn't bother to read the thread

BigHatch

Mmmm... true 3 inch TBE...

droebuck

Hey WSPY and everyone, what do you think of the infinity ex35. Basically a mini FX with the same motor. Says 290 horse out that 6. Looks more on the luxery side as the rdx is more sport. Bet it can be tuned to be pretty quick/fast. I dont see very many on the road though so they probably have less aftermarket choices than we do.

Mr Marco

I hate to see you all spend thousands of $$$$$ on a "car" that weights as much as my TL AND is a foot taller. No amount of tweeking will turn this top heavy beast into an S-4. I do understand the desire because if the mod really helps pull that much more hp/trq out without bad side effects (other than loosing ULEV status) it is desperately needed.

EDiT: Just to clarify, this is not the right vehicle to dump that kind of money into.

wspy

"To each his own"

carsrmilife

Droebuck: I have driven a few EX35's when I had taken my G35S in to be worked on. They are decently quick, and on the lux side as you say. However, I thought the interior was VERY cramped. Having an almost identical interior as my G had I like the interior thr RDX has better. Not to mention the AWD in the EX was completely useless in MI snow, even in snow mode. I had thought about buying one before my RDX, and didnt have much luck finding anything in the aftermarket. I know this is all useless info but I thought I would give some insight.