I'm looking to get a new downpipe and was wondering about fitment issues? What would anybody suggest for brands names or differences between companies? Has there been any changes over the years in terms of improvements of designs? Anyone who is happy or dissappointed with there downpipes? I think that just about covers my questions.

Thanks for the help

 

Search can help alot!! (I only say that cuz i asked the same question)

But go with an Ebay one. You may have to modify a little if at all but there's no difference really between which one you should use. They all do the same thing.

 

If you want to be assured of a good quality pipe with good fitment, stick with the pipes from rx7.com, Pettit Racing, or Gotham Racing. Many people have tried the cheaper pipes out there, some with success, others without. Do a search for more info.

 

When I was looking, many people told me to beware of downpipe's that are inexpensive and have a thin flange on the engine side that make's fitment a real problem.

I am going with a Pettit Racing dp that I have hear is made well, and fits well.

turbodrx7 has one for half the cost of a new one-I was going to buy it, but he couldn't get it to me in time. you might want to contact him if you end up wanting one of those.

 

I hear the search button lol, on 56k some times it's worth the heat!

 

i have an ebay dp on my car and the fitment wasn't very good. the holes did not line up with the cat so i couldn't install it myself. i had to take it to my mechanic who had to drill out the holes. add the labor cost to the cost of the dp

you can find some name brand ones used if you like or buy one that you know will fit.

 

I have a used HKS dp for sale

 

I have a polished stainless pipe that just came off my car. i bought one with o2 sensor bung and EGT bung for EGT gauge sensor. Let me know if your interested. Thick flanges and no fitment problems. Jack

 

I installed 'Tsudo' stainless downpipe from ebay recently and the fitment was horrible. midpipe came with the dp. even dp+midpipe combo fitment was horrible. I had to pull the stock exhaust forward to bolt it up.
I'll sell you the dp+mp combo for $50 if you want. it's almost like brand new.

 

Good to hear all these comments as i was about to buy one from ebay !!

 

HKS fits perfectly. It also does not require you to remove the stock studs, which tend to be locked in place (as mine were). The only problem is there might be flow problems associated with the curvature of the pipe. IMO though HP losses would be minimal from the "squashed" pipe

 

lots of those ebay parts are junk (stone, megan, obx, yippycaiyaa). in most cases you get what you pay for .

 

so stick with name brand...dps?

 

What about Bonez? I heard their cats are good, what about their downpipes? Anybody?

 

YES....pretty easy decision. Spend your $$$ once....dp installs arent fun.

 

get the HKS pipe and have it heat coated. the fit is great and it will reduce the under hood temps.

 

It also has a crimp in the piping because it is meant for a japanese FD. I recommend going with a d/p that doesnt have that restriction.

 

imo, the restriction is somewhat negligible. It sorta depends on whether you can back out the stock studs or not without breaking em. If the studs are locked in there tight, I'd use the HKS. If you can get em out, go with the petit or something. Of course taking the studs out just to see if they'll come out is somewhat silly too, but might be your best bet in deciding which DP to purchase.

I happen to have a Petit and a HKS. I'm using the HKS because I couldn't get the studs off without breaking them.

 

I used a Pettit on mine. The studs on mine came off easily. Hardest part was getting the precat out then lining the new one up w/ that gasket. But the Pettit fits perfectly.

 

Where do you get you parts heat coated?

 

There are shops out there that offer ceramic (heat) and powder coating as well as polishing. If you give the guys at www.GothamRacing.com a call, we have a good source for quality work. Of course, you are in canada, so someplace more local to you would be ideal.

 

Just wanted to say I have the gotham on mine, fit perfectly even with a nice thick and ugly thermal wrap on it!

Steve

 

I have a Gotham Racing downpipe. Fitment was very good. I had to dremel one of the welds to make the bolt head fit flush. For some reason, the bolts they sent me were the wrong pitch, so I had to get some grade 10.9 metric bolts from the auto parts store. Not really a big deal, but a minor inconvenience having to go get parts when I thought all of the stuff I needed for the install was there.

 

What about the quailty of materials, ie thickness of different dp's? anybody?

 

What about the quailty of materials, ie thickness of different dp's? anybody?