Exhaust size?

[ILikeCarsYesIDo]

Hell no I wouldn't do that.

So with that in mind, what exactly did Zoon do? You can PM me if you wish. I would honestly like to know now.

The justification is that I paid for a good quality piece of pipe that does exactly what it's supposed to do. That in itself is good enough to recommend it.

 

[IJ.]

If IJ has a problem with how i spend my money, thats his opinion...

What I said was a joke.........

Dunno why anyone would attempt to build a Supra without a good disposable income (I understand a freshen up to keep one running as a DD but NOT a performance build)

As for "my opinion" you keep crapping on threads where price on anything is an issue and people are getting tired of it so it might in "my opinion" be a good idea to knock it off.

As for Chinese manufacturing their 1st gen parts are always Garbage but by the 2nd to 3rd run the parts are serviceable, I use a 321 SS Header and I can't buy the Materials here for what it cost me shipped let alone my time to build one so it makes economic sense to me to buy one.

There is NO local supplier here nor any Australian made headers for 7M's so I'm not having a negative affect on my Country.

 

[shaeff]

Man, I honestly can't wait until all the guys doing real R&D work on new and innovative products get put out of business by the Chinaman products.

Then what? Nobody making new products for our cars. Which one of you (aside from Ian) is going to step up and fill in that gap? Create new products, and actually TEST them? Be here for this specific little community?

I'm guessing that nobody will be here, and the aftermarket for our cars will never expand any more than it already has. Have fun with hitting that plateau. Hopefully I won't be around for it, aside to say "I told you so".

 

[Rennat]

IJ - i dont mean to crap on threads, i just think peoples expectations of there prices are rather silly... i'll keep my opinion to myself from now on, and i'll let the mods take care of the FS section...

Grim - I did think this through, not 100%, maybe 98%, and that little extra 2% is adding up my bills really quick, but its not so much money thats the issue with me, if i REALLY want something, i'll save up and get it.

And i think BIC has done wonders for the community, especially the mounts, the braces, and all of the little things.

Whats the deal with zoon anyways?? maybe i'll go search that...
I just made muffins, so im gonna go eat.

 

[Dan_Gyoba]

The Chinese seem to have zero regard whatsoever for any kind of intellectual property. If they can copy it, they will.

And once they do copy it, there will always be a market for the cheap knock-offs. Just like with spam emails. That would stop too if people didn't RESPOND to them.

I'll admit that I put my car together on a tight budget, but the amount of money that I'd have saved getting a Chinese downpipe and/or exhaust wasn't worth it to me. In the Cheap/reliable/fast equation, I'd sacrifice cheap before I sacrificed reliable.

The saying that I always remember is: The cost of cheap parts is the cost of the cheap part, plus the cost of the expensive part to replace it (Sometimes plus the cost of the other parts that were relying on it.)

 

[Newkid]

So....
Bic=good
Chinese= bad
Got that right? lol

 

[Kangae]

So....
Bic=good
Chinese= bad
Got that right? lol

Yeah that seems to be the general agreement I suppose.

To tell you the truth these exhaust things are one of the things I don't know very much about yet...

Normally I don't use the chinese made things that are around, well except on occasion, like I just bought a keychain made in china... But that aside, one thing I always had a problem with was I never knew what exactly went into something like a DDP to make one.

Now I'm fairly new to this whole game, but when I look at the BIC DDP, I see a curvy pipe...I guess I'm just not sure how it cost $385. Granted I wont buy one cheaper because I know there is a reason for it, I'm just not sure what it is...

 

[Poodles]

zoon's DP = the same ones 935 is selling

It's fully SS, and one piece, has an extra bung for a wideband (though it's a bit too close), with a flex section to boot.

BIC's is mild steel, multiple parts, flex section is extra (and mild steel to be welded to the rest, and you can't coat it inside and out!), extra bung is extra, SS is extra...

There is a difference between being cheap, and knowing a good deal when you see one. The only options for a manifold are the chinese ones, cast ones, or american made SS ones that cost more than the damn turbo you'll be mounting to it.

Like already mentioned, I won't go cheap on things that really matter, but it's a PIPE.

On a side note I will more than likely be getting my exhaust from raptor racing...

 

[jdub]

Have to disagree Poodles...you can coat a pipe on the inside. Done it many times

 

[Rennat]

Why is BIC so expensive though...? Aluminized steel is pretty cheap, espeically compared to stainless, and if you order enough, i would think you could get an even better deal for it... Do his come with a lifetime warranty against cracking?

 

[Poodles]

Have to disagree Poodles...you can coat a pipe on the inside. Done it many times

I wouldn't trust coating the flex section...

 

[easternguy2005]

I just finished my exhaust upgrade and did alot of research. I've read this thread and it concerns me. This made in China - do you guys really know where your stuff is made or are you just believing all the hype from the part manufacturers.

I started hearing a hiss that sounded like manifold crack type leaking under the hood. Traced it to the doughnut gasket between the turbo elbow and downpipe. Replaced it only to have the noise come back.

Turned out it was the flex part at the top of the stock downpipe. I looked at all kinds of downpipes. Sure you can buy a $400 divorced downpipe but your C-26 turbo isn't divorced at the exhaust so introducing it at the pipe gives minimal gains. Its also just equalizing at about a foot or so down with the regular exhaust pressure to the only "sell point" is that there's less turbulance. The stainless steel downpipe I bought ($120 with shipping) starts as a 2 1/2 " pipe at the turbo and becomes a 3" pipe. Many people talk about eliminating that 90 degree elbow...mine is still there. I look at it this way - there's lots of 90 degree bends pumping the air through the intercooler etc so if they really mattered then that would be addressed but since there isn't an easy work around for the manufacturers they hype this elbow.

The catalytics - I pulled them both out. Al Gore keeps telling me about the Carbon Dioxide problem, my friends buy hybrids. I am doing something pro-active by not adding more dioxide to the atmosphere. The 3" then goes back to 2" 1/2 inch all the way to the back. I like a quiet car because when you've done the lexus upgrade and brought the boost up a notch there's no need to pretend like the honda's with a coffee can muffler setup. I'm more concerned about looking stock so I leave the stock muffler and resonator in place. The turbo spinning up sounds just that much better anyway.

I rerouted the speedo cable because stock was just too close to the pipe for comfort. Used a metal strap and two rivets - easy to do. The speedo has a white cover which I think is for heat shielding but I already spend enough time under the car so doing it right made sense.

I called a shop when doing my research that specializes in supra exhaust mods and was of course hawking his specialty pipe with the "you won't know what you're missing" but that sounds like the real estate agent trying to sell a house with their sales pitch.

Let me say that if you have the money there's nothing to lose by laying out a couple of grand on a complete pipe system.

YOU WANT IT LOUD ? Well why not have the best of both worlds and get the test pipe where the 2nd car goes that has a bypass. Shim it with a washer for preference maybe.

So how about that backpressure ? Yes how about it - there's a problem with no back pressure in that the turbo will be working ALL the time. You should have some backpressure for your valves as well. Look up turbo creep for more info.

One of the biggest questions I had was how to mate that test pipe because I don't want to smell exhaust ! I cleaned up the junction points and used the stock (new from dealer) doughnut from the downpipe to the test pipe and then direct test pipe to stock pipe. Make sure your muffler tail pipes are horizontal and not at an angle when looking at the rear of the car before the final torque.

SO I have used this system for months with success and I especially like the deeper sound. Spool time is great and no leaks. I do have more PCV residue than before. So after working it hard you may get 1 puff of blue smoke from the oil coming through from venting the crankcase. I've seen some nice setups for supra and MR2's - catch cans - but a little smoke after beating on it isn't too bad once you know whats going on.

There is a post somewhere on the web where a guy actually tested different size pipe but I can't locate it.

I don't know where my pipe was made and I don't see it anymore except when I am under the car. The stock exhaust system isn't stainless and it lasted 18 yrs.

I don't endorse any manufacturer and this is LIKE the pipe I got, not the same manufacturer

 

[gofastgeorge]

Someone should close this thread before Billy Graham starts preaching here........

 

[Poodles]

Sure you can buy a $400 divorced downpipe but your C-26 turbo isn't divorced at the exhaust so introducing it at the pipe gives minimal gains. Its also just equalizing at about a foot or so down with the regular exhaust pressure to the only "sell point" is that there's less turbulance. The stainless steel downpipe I bought ($120 with shipping) starts as a 2 1/2 " pipe at the turbo and becomes a 3" pipe. Many people talk about eliminating that 90 degree elbow...mine is still there. I look at it this way - there's lots of 90 degree bends pumping the air through the intercooler etc so if they really mattered then that would be addressed but since there isn't an easy work around for the manufacturers they hype this elbow.
The catalytics - I pulled them both out. Al Gore keeps telling me about the Carbon Dioxide problem, my friends buy hybrids. I am doing something pro-active by not adding more dioxide to the atmosphere. The 3" then goes back to 2" 1/2 inch all the way to the back. I like a quiet car because when you've done the lexus upgrade and brought the boost up a notch there's no need to pretend like the honda's with a coffee can muffler setup. I'm more concerned about looking stock so I leave the stock muffler and resonator in place. The turbo spinning up sounds just that much better anyway.

OK, the bold part is the BIGGEST CROCK OF SHIT I'VE EVER HEARD.

Reduced turbulance allows the turbo to BREATH and boost more effectively. The stock elbow forces the wastegate gasses directly into the stream of the turbine causing horrible turbulance. A DDP (rerouted or not) has a divider that seperates the wastegate from the main exhaust. The wastegate opening is pre-turbine, even though it's still in the turbine housing.

External wastegate or internal, it functions the same, as a vent pre-turbine to keep from overboosting.

Second part about the cats. Please for the love of god look up what cats do. My exhaust won't be a "coffee can" setup, and it will be 3" all the way back. My DDP helped a lot, but the new high flow cat and 3" exhaust opens it up a WHOLE lot more compared to bolting it to the stock exhaust as you're not taking advantage of the gains. There are quite a few exhausts on the market that will flow great and aren't too loud.

Seriously, I'm laughing my ass off at:

I called a shop when doing my research that specializes in supra exhaust mods and was of course hawking his specialty pipe with the "you won't know what you're missing" but that sounds like the real estate agent trying to sell a house with their sales pitch."

Sure, ignore the tried and PROVEN advice of people that have been around tuning these cars far longer than you.

If you have an opinion, state it as that, do NOT state your opinion as fact. The facts are pretty clear:
-DDP's WORK
-cats WORK and high flow onees flow well enough to only see a 2hp difference on a dyno compared to a test pipe (that's small enough to be the margin of error on the dyno FFS!)
-stock elbow is one of the main restrictions in the exhaust
-not having a full turbo back exhaust is pretty much pointless



I may come off harsh, but I do not put up with disinformation.

 

[Rennat]

So how about that backpressure ? Yes how about it - there's a problem with no back pressure in that the turbo will be working ALL the time. You should have some backpressure for your valves as well. Look up turbo creep for more info.

that was my FAVORITE part about his post...
he obvisouly has NFI what hes talking about, a mod should really delete his post as its just going to cause problems.

 

[IJ.]

So how about that backpressure ? Yes how about it - there's a problem with no back pressure in that the turbo will be working ALL the time. You should have some backpressure for your valves as well. Look up turbo creep for more info.

ohhh my...... :nono:

 

[Supracentral]

he obvisouly has NFI what hes talking about, a mod should really delete his post as its just going to cause problems.

No, we're not going to delete his post.

It needs to stand as a warning to anyone who would listen to anything he says... The ignorance and lack of understanding here is of an epic level.

 

[Nick M]

-cats WORK and high flow onees flow well enough to only see a 2hp difference on a dyno compared to a test pipe (that's small enough to be the margin of error on the dyno FFS!)

A comment here is needed. I remember way back when on the Supra when the first testing was done for the aftermarket.

The full catless competition exhaust was only worth 5 rwhp over the cat version. And it was a larger pipe too. That part will matter more as the HP levels rise, but the Toyota cat flows pretty darn good.

 

[Poodles]

This is very true, any cat will flow very well, if it's not clogged with age.

I need to replace mine so it's obviously holding me back at this point.

The ONLY reasons to not run a cat are:
-being cheap
-want to shoot fireballs
-running race gas

 

[7MGTEsup]

This is very true, any cat will flow very well, if it's not clogged with age.

I need to replace mine so it's obviously holding me back at this point.

The ONLY reasons to not run a cat are:
-being cheap
-want to shoot fireballs
-running race gas

You forgot reduced CO2