Anything wrong with Gotham Racings DPs? They seem to be at a reasonable price.

-Dan

 

Get a Stainless Steel one. Also make sure you get one that other people have had and experienced no problems with them.

 

I've got a stainless steel Bonez coated with Coolblack (1700 deg.) by Calico Coatings(60 bucks for the coating). I love it!

 

Well, I tried to save some money and bought a used SS one off a member on here for $50 that he said was a Trust downpipe. Had to weld up an EGT probe hole and it was good to go. Didn't discover until it was all installed that it was physically impossible to put the O2 sensor in place once the pipe was installed. Moral of the story....don't try to cut corners when it comes to parts that are a PITA to put in.

 

O.K., Finally got my car back and I can tell everybody that the DOWNPIPE from the RX-7 Store works great, there were no installation problems or the unit hitting any part of the car once installed. I highly recommend it

It seems like the area of the turbo and pre-cat (where the DP in now installed) cools down a lot quicker than before. It used to take about 15 mins. before the red glow of the turbo/pre-cat would go away but I think that is down to approx. 5 mins. now.

 

Dude... unless you are always really hard-driving your car your exhaust should not glow.

I think your precat was clogged. The same goes for your cat.

 

foamfan, do you have stock exhaust? I was looking at the RX7store DP as well but was unsure about any fitment concerns with the stock exhaust.

If you had no problems, I think I'm gonna go buy one right away
Let me know please.

 

The rx7 downpipe connects to the cat. And yes it fits perfectly....

 

No fitment problems and VERY satisfied with the product.

 

You need to learn your car before you jump into a diagnosis.

 

Thanks for that "Mr. I can't even decide for myself what DP to use" It's just a pipe man, it doesn't get any lower tech than that. If you can't figure that out for yourself you shouldn't be making statement like the one you just did to me.

I know my car thank you. I've had it for 8 years put 100k miles on it and done every mod intellingently.

 

My car was purchased brand new and remained in stock condition since it was not expected to last this long, being solely a motorsport toy. I've never been into the crowd that modifies a car to the hilt and drive it like a puss. The purpose of the forum is to seek out and exchange information and I figure that there are a lot of people with greater knowledge than myself in what works and what does not. I am sure you know that there are more than a few versions downpipes available for this car.

100k miles on your car is commendable but obviously has never seen a racetrack for it to last that long
If you ever pass my way; pick any roadcourse or autocross event and maybe we'll see if your intelligently (check your spelling) modified car can beat my "Mr. I can't even decide for myself what DP to use" car.

 

Montego is right. Something was wrong for your pre-cat to be glowing red for several minutes after driving.

Even on the dyno with little air movement, my downpipe went from red-hot during the run to not glowing in only a few seconds. I have NEVER seen my downpipe still glowing red after driving and getting out of the car, even after a 20-minute session on the track running 13 psi.

 

you are funny my friend let me tell you.

really purchased new? for motorsports purposes but kept 100% stock (wow, is there a bridge you want to sell me too?)... and 13 years later you are barely getting a DP. BULLSHIT. If you knew anything you would had gotten rid of that precat within the first week. As it is a reliability mod because it only causes heat and adds restriction. And you say I should know about my car?

yeah that's a real tough decision right there especially coming from an experienced auto-x'er as yourself.


What does a racetrack have to do with you making a stupid question and then telling someone else that THEY need to know about their car? nothing that's what.


oh no a typo... gosh darn you got me. pfft... "if you ever come my way" Really head all that up there? You know that's not going to happen so that statement is asinine. Just like autocrossing for 13 years with a precat installed on a car that was purchased for motorsports purposes only.

2 possible things about you:

a) You bought your car 13 years ago for the whole purpose of being a motorsports toy (those are your words) and hence actually autocrossed for 13 years with a precat. Which means that you don't know **** about your car or you aren't very much into the research thing to try and improve in your sport.

b) You are a liar. Either you didn't buy it new and just started with the auto-x thing with the FD. Hence it excuses your lack of knowledge on this car.

So which is: An auto-x'er who does not know **** or a liar?

 

BTW:

I've never seen my car exhaust glow after shut down from regular driving or even spirited driving.

You should take into account that I was just trying to be helpful. That's why I said "unless you are hard driving your car your exhaust should not glow." Not judging nor anything just throwing out advice either take or not. But you seem to have seen my original post as an insult.

 

Montego,

In order to autocross in a stock SCCA class "legally", a stock precat would be required. Some clubs relax the rules. Some do not.

 

ok there ya go. Consider myself

I will still say that it's silly to buy a car for only motorsports purposes and stay in the "legally" class. There are stock parts on this car that not only hinder performance but reliability as well.

 

Absolutely correct, as in "Super Stock"

Montego, Try running your car with a little "gusto" at night, park it in an unlighted garage; take note of how the turbo and exhaust manifold looks like then maybe you'll catch on.
This is my last post on this thread since it has been corrupted by somebody that not only exudes maleducation but obscenity and vulgarity.

 

I have. I drive my car hard all of the time and nope haven't seen that glow. But it's obvious you don't listen. Because not only I have told you this but now Rynberg has also. oh wait others as well:

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^^
yeah... and I guess none of us know about our cars right. We are all wrong and against you. jeez man I feel sorry for the people that actually have to deal with you on a daily basis.


ha ha I know you will pop back in. what obscenity and vulgarity? I used the words bullshit, ****, and asinine. Little sensitive aren't we?

BTW- hey maleducation is not a word...

http://www.m-w.com/dictionary/maleducation

The word you've entered isn't in the dictionary. Click on a spelling suggestion below or try again using the search box to the right.

Suggestions for maleducation:
1. malediction
2. maledictions
3. maladaptation
4. maledictory
5. maledicting
6. noneducation
7. maledicted
8. maladaptations
9. melodically
10. maladroitness

ok hey maybe it's me and webster let's try another:

maleducation was not found in the Cambridge Advanced Learner's Dictionary

quit trying to use big words.


bottom line is for some weird reason you got insulted just because I made a suggestion. On top of it you were wrong.

 

i have a bonez DP and it came with all the hardware too except the gasket. i like the fitment because it has a longer curve to it. the only problem was, it was a bitch to install because i had to double nut the studs off, also to get to the top studs, i had to take out the y-pipe. the gasket is like a $110 dollar, but you can make your own from sheet metal, a drill index and some sheers. works like a charm for me

 

Personally, I wouldn't consider keeping the stock precat. It can cause all sorts of trouble. I can only think of two reasons to keep it:

Racing rules & smog.

In Ca, I have been able to pass smog with no DP. I'm not sure if I would be confident in passing smog with a shiny DP. I had mine coated with grey ceramic for that reason, and for heat reasons.

 

How much improvement and benefit would there be to put on exhaust wrap vs ceramic coat the DP? I know if helps to evacuate exhaust gas faster, thus better performance. However, I'm replacing the DP for reliability, not for performance gains. If there is a significant improvement in lowering engine room temps, I want to do it.

Exhaust wrap, I can do myself. Ceramic coating, I don't know where to get it done, nor how much it would cost, and if it's worth doing for a DP vs exhaust wrap.

Any opinions?

p.s: If necessary, which screw will I need to adjust if the idle after replacing the stock DP? How to adjust (how many turns, which way).

 

You won't have to adjust idle after installing a DP.

 

I read on some random thread where a guy had replaced his DP only and his idle suffered, he was told to adjust a screw .... I can't find the thread anymore. Nevermind, good to know

Still wondering about exhaust wrap vs ceramic though. Any thoughts?

 

Montego

You remind me of Jimlab in this other thread: Its Official-V8 Rx7 vs. Rotary Rx7