Well due to my impatience, my car will be going to RPW tomorrow to have a new exhaust fitted. I already have the lukey high flow muffler installed so the information we get from this will be considered useful. My car will be dynoed before any exhaust work is done, a 2.5" stainless steel mandrel bent exhaust with 2.5" high flow cat, 2.5" resonator and 2.5" lukey canon ultra flow muffler will be installed then another dyno will be done. This information will be useful so that we can see the difference between the standard exhaust with a high flow lukey muffler and a full exhaust upgrade.
This is going to be done tomorrow so the results will be posted up in the next day or two.
Cheers
Paul

Let us know how it goes mate!! :D

yeah interested to hear the difference mainly because the 3.5L's already run a nearly 2.5" zorst - i personally at your stage would have gone a 2.75" or a 3" - because your car is basically where mine was at and it was the exhaust hindering me.

Manual

We discused going larger to about 2.75" but we thought that unless i do any inside engine work (like cams) or forced induction it wouldnt be necessary (and i am not doing any of this work). Standard 3.5L exhausts do have sections of 2 1/4" piping so this upgrade should be sufficient with the other upgraded components.
But again this is something that hasnt had the results recorded yet so I mean the gains could be very minimal or it could be significant. Someone had to be the first to do it and get the results recorded on a dyno, my way of giving something back to the magna community.
So this is really the scenario. Standard 3.5L exhaust with lukey high flow muffler V whole 2.5" high flow exhaust system.
This will help us find out just how good the standard system is.

IT is there right now, should be getting the dyno done right now.
Really excited

Are they doing any tweaking to the tune at the same time, or do you plan to run the existing maps with the new zorst?

no tuning so this will just be zorst V zorst. I will be getting CAI done then in a coupe of weeks another dyno tune will be conducted and that will be my final performance upgrade for some time as i want my car to look a little more aggressive after that.

so is it done yet? :bouncin: :bouncin: is it? is it done? huh? huh? :bouncin: is it done?? :bouncin: what'd ya get? :bouncin:

haha it takes the whole day to do, probably getting the new exhaust fitted now.
I dropped it off at 8.30am, needed to be taken to a dyno and dynoed, taken back to RPW for the fitting of the new exhaust then taken back to the dyno again for another run then back to RPW where i pick it up. I wouldnt expect it to be ready before 4pm today

well its now 6??

oh yeah - and the exhaust isn't 2 and a 1/4 inch - it is actually a strange size - it is about 2 or 3mm short of 2.5" - we actually measured - and yeah - i would still have recommended the larger (2.75") from personal experience with a similar list of mods.

But let us know how you went

Manual

:badgrin: Well the car is back and the results are in.
And i am very impressed!!!!!

The main aim of this is to see if the standard magna exhaust with a muffler upgrade (in this case a lukey high flow muffler) was a sufficient upgrade in terms of power upgrades.

Dynoes were conducted before and after the fitment of a new 2.5" mandrel bent system with 3" muffler would be far superior. And it was!!

Surprising though was the type of improvement i experienced. Obviously sound is much stronger and deeper (which i like). But in terms of power and torque improvements, there are a couple of surprises. In the top end i only gained around 2hp at the wheels and a little torque- this will increase though when a dyno tune is done soon as this area needs to be tuned properly. However power improvements were huge done low.

Here is a summary
At 40km/h i recorded 4hp at the wheels improvment
At 60km/h i recorded 9hp at the wheels improvment
At 70km/h i recorded 12hp at the wheels improvment
At 80km/h i recorded 4hp at the wheels improvment
This lasts all the way to about 90km/h where the graph gets closer at the top end.

Torque improvments were very significant. from 40km/h to about 80km/h the improvment in torque recorded about a 10%-15% improvment.

Thats the summary, im keeping the final figures secret until i do a dyno tune in a couple of weeks then i will post up the dyno graph. lol

So in my opinion this upgrade was a huge success, the car pulls so hard down low!
I would recommend this to any magna modifier

Cheers
Paul

Sounds exciting!! Although - dam! It's sounds like it's gonna be another mod for the shopping list.

My question is - I already have a Lukey LR2779 (magna sports style) exhaust. How viable is it to just increase the pipe size then? I'm not too keen on a loud rice cannon :p

yeah RPW exhaust, especially their race extractors are amazing. Not being bias here, even though we are a distributor for them in Adelaide. But we have seen results ourselves on our customers' cars and they are all raving about how much better the car feels. Response, power and exhaust note all improved. These are great stuff. I have also dealt with Lukey, HM Headers and Pacemakers, but these I must say is well worth the money. Exhaust isn't something you want to do more than once, so why not save up a bit more and go the ultimate.
:badgrin:

ok heres my question. obviously this gain will make that dead spot in the magnas below 3-4 grand be better.

next question...is it really necessary to replace the WHOLE exhaust? or can you get away with only replacing the necessary bits

Nice!

Ive got a TJ Magna Sports (2001). The exhaust system is completely stock at the moment. Not interested in extractors yet, what would you guys suggest?

I don't want it to sound crappy though... What exactly are you putting in? How many mufflers etc??

What would be the down side to going 2.75inch?

sorry to be an ass but..

""""yeah RPW exhaust, especially their race extractors are amazing."""""quote

do these exist yet??

12hp mid rev gain = about 6 or 7kw ATW - that is pretty damn good for just the exhaust. sounds interesting, though what happens when it gets closer to "90 km/h where the graph gets closer at the top end" ???? just stirring - ECU should sort that out, keep us posted how it goes.

Id say they do, as I posted on mogwa about a set for my TL awd, and they have them in stock.

Excellent news about the gains! I wonder if 2.75" would have allowed for more gains at the top end? I guess we will see once you've had a the re-tune done - if you don't pick up much more then perhaps the system is still restrictive at WOT.

Were you a guinea-pig with a discount, or did you pay full price for this system? If it's not a secret, what's the going rate for this mod?

Cheers.

Oh.. and about the RPW race extractors.. if I remember correctly, the AWD design exists and is slightly different to the FWD version because the rear bank is slightly shorter to accomodate the AWD bits. It was also made first.. these were the ones fitted to Manual's car I think? Then RPW went back and had them modified for a bit better torque since there is more room in the FWD. As it stands the designs have been finalised and David is just waiting on stock to fill the back order log.

Think your dead right there. The headers would have to be different, as a non awd magna doesnt have a tailshaft to contend with.

yeah RPW exhaust, especially their race extractors are amazing. Not being bias here, even though we are a distributor for them in Adelaide
Hey how much do you sell them for down there.....anymark up over RPW , and what is the shipping/postage for them to get up to Sydney!!
Adam:flame:

So basically, you just did a 2.5 binch cat-back exhaust with a 3 inch muffler ??

They are good gains from such a easy mod.

Why would there be a need to dyno, i have a Unichip so you are saying if i upgrade my exhaust i would need to retune the chip ??

to get the best gains u need to.

to get the best gains retuning the chip is necessary but it doesnt have to be done its upto you, since i got the greddy installed i have also got an oversized throttle body and will have CAI soon so those three mods should be enough to justify a retune to get better gains

he replaced everything except the extractors and the gains have been taken as proof of how good the extractors are? :confused:

Altera: im confused can u elaborate please?

Well due to my impatience, my car will be going to RPW tomorrow to have a new exhaust fitted. I already have the lukey high flow muffler installed so the information we get from this will be considered useful. My car will be dynoed before any exhaust work is done, a 2.5" stainless steel mandrel bent exhaust with 2.5" high flow cat, 2.5" resonator and 2.5" lukey canon ultra flow muffler will be installed then another dyno will be done. This information will be useful so that we can see the difference between the standard exhaust with a high flow lukey muffler and a full exhaust upgrade.
This is going to be done tomorrow so the results will be posted up in the next day or two.
Cheers
Paul

well what u r doing if i understand correctly here is raplacing an exhaust system that is stock apart fro the muffler with a system including upgraded piping, cat, and centre resinator. (altho your sig mentions pacemakers)

so, whether it is only the new parts you mention along with stock manifolds, or the new parts along with the pacemakers mentioned in your sig below, you are not using any rpw race extractors. this is why i think its incorrect for the gains u made to be assumed proof that the rpw extractors are superior when they were not actually used.

they probably are the best going, but were not part of your experiment, the rest of the system after the extractors was so its more proof that those parts used are the better.

hope that makes sense :cool:

I think you'll find mr_mbquart already had the pacemakers/greddy/tb/etc and has just had a catback/muffler job done.

I think Anthony's post was more of a general marketing pitch :D

yeah already had the pacemakers installed, i didnt upgrade them to the rpw extractors, the exhaust i got done was from the extractors back. Thats why the results were so defining because this didnt include tuning or extractors in the upgrade

our testing was also done with just the extractor upgrade, and we too, sing the similar song of joy.

as for the race extractors, yes they are now available for the TE-TJ magna, but be quick, stock is very low, as they were long awaited for (almost a year). So there is a huge back order from people who has waited since last year. Email us if you want any.

You can get the HPC coated version or the non coated version. at around $440 more expensive (for a V6) to have it coated, but you will be amazed at the performance it carries and how it keeps all the heat in. We could hardly believe the difference ourselves. We never thought ceramic coating can make this much difference.

you do know that pacemakers can be bought for under 400? bang for your buck i say,



later :cool:

our testing was also done with just the extractor upgrade, and we too, sing the similar song of joy.

as for the race extractors, yes they are now available for the TE-TJ magna, but be quick, stock is very low, as they were long awaited for (almost a year). So there is a huge back order from people who has waited since last year. Email us if you want any.

You can get the HPC coated version or the non coated version. at around $440 more expensive (for a V6) to have it coated, but you will be amazed at the performance it carries and how it keeps all the heat in. We could hardly believe the difference ourselves. We never thought ceramic coating can make this much difference.
Awesome! So they are ready at last!? Can RPW or yourself post some before/after results???

I've been waiting to see a dyno or hear some feedback about them before commiting to an order. But once I do, the ball will finally start rolling. Of course I'll need other mods at the same time :D

You can get the HPC coated version or the non coated version. at around $440 more expensive (for a V6) to have it coated, but you will be amazed at the performance it carries and how it keeps all the heat in. We could hardly believe the difference ourselves. We never thought ceramic coating can make this much difference.

I'm one of those with a set on back-order and I'm getting mine HPC coated just for the hell of it. I'm curous just what sort of difference you saw between coated and non-coated. Got any dyno sheets with some examples?

For those that care, I'll be getting a before and after dyno when I get mine done.. hoping for this month, but nothing new there lol