2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Just installed my True Dual set-up and wow.

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Old Feb 20, 2003 | 06:22 PM
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Cool Just installed my True Dual set-up and wow.

Damn guys this system is badass. It took me about 5 and a half hours alone to put them in. To all the people that told me it would sound like a crazy lawn mower, you were right. But i don't care it is sweet as hell. On the first start the FC cold started and damn I almost pissed myself when I heard it. "Lawn Mower" I think it sounds like a small motercycle more than a mower or weed wacker. I love that it was almost all stainless but it is going to be gone by the time I go back home except for the "Cans" ,which by the way, are awsome. I want to go out and buy a camcorder to have my friend stand behind the car and tape the flames. . Also the kit came with its own ACV block off plate so I saved myself like 20 buxs and I got a cool Mazdatrix sticker, but I don't know if I should put it on or not. Might be Rice.

Duals



Last edited by 1987RX7guy; Feb 20, 2003 at 06:43 PM.
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Old Feb 20, 2003 | 06:24 PM
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So explain your setup! What do you have, the RB uncollected race header with the two presilencers or what?
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Old Feb 20, 2003 | 06:30 PM
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i've been saying this for over 2 yrs
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Old Feb 20, 2003 | 06:34 PM
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couldn't be racing beat I've got full racing (headers, presilencers i.e. no cats. dual mufflers) beats full exhaust system.
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Old Feb 20, 2003 | 06:39 PM
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It's one of the mazdatrix setups, using either HKS or RB mufflers, and it's basically the uncollected header with two presilencers going to whichever mufflers he got with it.
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Old Feb 20, 2003 | 06:43 PM
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Yeah it is from mazdatrix. RB mufflers at the back and it is sweet as hell.
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Old Feb 20, 2003 | 06:44 PM
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I also like the RB cut-out on the headers. and the TRIX etched at the bottom.
I got it just in time because my stock cans were falling apart(literaly).
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Old Feb 20, 2003 | 06:47 PM
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ok its all shiny and sounds like a 2stroke. but hows the difference in go?
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Old Feb 20, 2003 | 06:52 PM
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Jeremy the difference is a hell of a lot. I am afraid to let my steel toe boot go down all the way for fear of having to replace my tires. I was in second at like 2500rpm and gunned it and the tires sstarted to sqeel so I let up a little. But I have only floored it once and then had to slowdown because traffic was thick so I did not want to end up as an FC sticker on an 18wheeler. I will post what happens when I give it a good run after work which is in about three hours. but I like it already.
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Old Feb 20, 2003 | 07:47 PM
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And post some good video when you get it. I don't want to buy it in January and find out you lied
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Old Feb 20, 2003 | 07:53 PM
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They have a video of the exact same setup on mazdatrix website, under the racing only category and then exhausts for 86-92 NA
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Old Feb 20, 2003 | 08:06 PM
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That is ******* awesome. can we cuss on this forum?
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Old Feb 20, 2003 | 08:13 PM
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Originally posted by 88IntegraLS
That is ******* awesome. can we cuss on this forum?
you goddamn **********, don't use that shitty foul *** language on the ******* board.

anyway, sounds sweet. guess it goes to prove the gains that can be had in exhaust alone on rotaries. hmmmmm, non-leaking, non-falling off exhaust.........
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Old Feb 20, 2003 | 08:30 PM
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Hmmm...I would really like to see your setup and your video (I've seen their video a million times but I want another video because I don't know what kinda quality stuff they used to shoot theirs). Congrats on the new system though!

By the way, I'd watch what you say...despite the fact that we can "cuss" on this forum keep it tasteful or I'm sure you can feel the wrath you...the wrath of the nun-chucks!
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Old Feb 20, 2003 | 09:47 PM
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we got to get you on a dyno!
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Old Feb 20, 2003 | 09:50 PM
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Should have got him on a dyno before and after!
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Old Feb 20, 2003 | 09:51 PM
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Thats pretty much the same thing I'm running on my car. RB road race header, into 2 pre-silencers, then into two RB mufflers. Dual 2" mandral bent all the way out. Only difference is, I did mine myself. Some day I'll try to get a mpeg with my car on it too. CJ
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Old Feb 20, 2003 | 09:52 PM
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heh sweet, I want to see some video!
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Old Feb 20, 2003 | 10:12 PM
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I want to buy a camcorder soon but need to find one that is like 300 or less and good quality. If anyone will donate me one I would appreciate it. I still have the stock stuff and the stock stuff off my 88 GXL but I don't think anyone has a Dyno that I know of plus no $$$ to buy the time on the Dyno. I still need to do a lot of stuff to get the car running perfect. Idle problems have come back for some reason and I don't think I have a vac leak but who know. I will try to get a vid of my Blue and grey car that needs body work and paint soon. Don't expect a badass car it needs a lot of work Cosmeticaly and some mechanicaly. If anyone that is going to meet on March 2 in San Antonio would like to donate dyno time I will go for it.
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Old Feb 20, 2003 | 10:22 PM
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Almost forgot, I drove a little harder on the way home and I see this mid-nineties BMW passing on the right side shoulder and I follow but on the left lane and by the time I get out of traffic he is about 15 cars ahead of me so I down shitf into 4th and floor it. Damn I am really liking the way this exhaust sounds. I guess it is my wierd taste but I love the sound kinda like a big motorcycle. Well anyhow I am doing about 85 and I start gaining steadily and get it to the red line in 4th and shift into 5th and the car was still accelerating. I am not used to that usually I would redline 4th and that was it the race was over unlees we were on a down hill. I passed him and he is like just loosing ground on me. I let offat about 125mph, but then I see the BMW's lights getting closer and he is gaining mad crazy like he had NAWS or somthin but I gun it again and he can't gain more than like a foot. then he lets off and gets behind me and stays about five cars behind me the rest of the way home. God I wish I could still have my cone filter on there. I am sure that would have given me a better exhaus note and a little more pep.
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Old Feb 20, 2003 | 10:43 PM
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You and your 125mph freeway runs.
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Old Feb 20, 2003 | 10:57 PM
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I let off cuz I got worried about my tires. I will soon switch to Micheline pilots from my other car. They are H rated so I will be a little bit more comfortable doing these things with those tires.
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Old Feb 20, 2003 | 11:02 PM
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You redlined in 4th and then gained speed up to 125mph in 5th? Sounds bullshit to me. The over the top switch cuts the fuel curve in 5th for mileage. If you had an a/f guage you'd know that.

Pulling on a mid 90's BMW 318i maybe... Any of the I-6's will school your *** on stock ports n/a top end accelleration. (unless you had been in 4th where you'd be making power on a street port) They have 200lb/ft of torque, and a 6500rpm redline just like you do, with 50 more hp stock.

I know exhaust makes a BIG improvement, but you need to be realistic here. My buddies `89 325i with 180hp stock will school a stock n/a 7. (well, stock motor with bolt ons)

Last edited by Jimmy325i; Feb 20, 2003 at 11:06 PM.
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Old Feb 20, 2003 | 11:11 PM
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I let off cuz I got worried about my tires. I will soon switch to Micheline pilots from my other car. They are H rated so I will be a little bit more comfortable doing these things with those tires.


Well....
I did not here the buzzer for 4th so I am not sure where exactly I shifted. but I saw the Speedo at 125 when we were on the last straight stretch. You can either believe it or not. That is your oppinion, but I was in my car and you were not. I did not get to see what model it was. I would not remember anyways since I have like memory lapses and **** so I easily forget crap that just happened ten minutes ago. I really need to get a check up it might be something really wrong with me. Oh well.
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Old Feb 20, 2003 | 11:11 PM
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Originally posted by Jimmy325i
You redlined in 4th and then gained speed up to 125mph in 5th? Sounds bullshit to me. The over the top switch cuts the fuel curve in 5th for mileage. If you had an a/f guage you'd know that.

Pulling on a mid 90's BMW 318i maybe... Any of the I-6's will school your *** on stock ports n/a top end accelleration. (unless you had been in 4th where you'd be making power on a street port) They have 200lb/ft of torque, and a 6500rpm redline just like you do, with 50 more hp stock.

I know exhaust makes a BIG improvement, but you need to be realistic here. My buddies `89 325i with 180hp stock will school a stock n/a 7. (well, stock motor with bolt ons)
Yeah, if it doesn't have a turbo there is no way it reach 125mph in 5th
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