Anyone done chip without exhaust?

[Deejay]

Hey 08Kingcab,

It won't be long until we find out. DP Chip received the chip yesterday and will have it back to me by end of next week.

They affirmed to me that the chip performance figures were "average" over several chips tested and that the kw and Nm reading was on mid setting which allowed for further increaes to handle exhaust mods, bigger intercooler etc.

Cheers,

DJ

 

[maddogrc]

hey deejay mate,

on monday will be calling up 20, yes 20, different exhaust mobs around perth after having a quick look in the yellow pages.

going to ask prices for:

2.5" from turbo back with or without cat and with or without muffler
3" from turbo back with or without cat and with or without muffler
2.5 or 3 inch (or 2.75 if 3 cant be done) dump pipe to fit the stock system

 

[Deejay]

hey deejay mate,

on monday will be calling up 20, yes 20, different exhaust mobs around perth after having a quick look in the yellow pages.

going to ask prices for:

2.5" from turbo back with or without cat and with or without muffler
3" from turbo back with or without cat and with or without muffler
2.5 or 3 inch (or 2.75 if 3 cant be done) dump pipe to fit the stock system

Hey Maddogrc,

Go you good thing! I don't know that you'll need to call all 20 as I reckon you'll start to get a feel for whats decent and whats BS after about a third of that. I'll be very interested to hear your results though.

I'm still thinking dump pipe only as I like a quiet exhaust and from what I can tell, the system looks pretty free once you're past the DP or maybe the cat. Pretty sure removing the Cat would be seen as a warranty/ legal issue with Nissan so don't want any hassles.

I hope to hear back from DP by mid week with a response like, sorry DJ, you were only getting 50% of the power due to a failed diode or something....... I mean you never know eh?

Cheers mate,

DJ

 

[maddogrc]

there was a thread a while ago asking about if changing the exhaust would void the warranty.

if you do get a new dump pipe then you're really 'supposed to' put a cat in. if i get a full system it'd be a cat that bolts on and can be put on/off.

in terms of warranty, it may void it, but i would like to see nissan blame the failure due to an exhaust...

as joshy once said under the lines of 'they dont have to prove the exhaust did it, but you have to prove that the exhaust didnt do the damage/issue'

 

[maddogrc]

will be calling up tomorrow, was up from 8:30am to 1pm doing study for an exam today so didnt have any time and it finished at 5:10, so they were mostly closed

tomorrow it is!

 

[maddogrc]

THE GREAT EXHAUST QUOTE DAY, lol

mettams mufflers - 9275 7034
2.5 1200 (dump, cat/muffler included)
3 1400 (dump, cat/muffler included)
dump 300-400
friendly service

genie exhaust - 9330 6900
2.5 1000 (dump, muffler, cat (wont sell without cat), fitted)
3 not recommended, too big
dump
friendly girl, knew her stuff, then talked to a mechanic, fairly informative

exhaust world - 9228 3244
2.5 950 (dump, no cat, no muffler)
3 not recommended (states tests have shown they don't do well at high revs .eg gutless due to no backpressure?
dump ?
very friendly, seems pretty knowledgeable

ian diffen tyre factory - 9344 3419
2.5 900 (dump, muffler)
3 none - not recommended as supposedly the engine doesn't make enough power so fuel consumption would go backwards?
dump -
called supplier over east and then called back a few minutes later, very friendly, hasnt put a kit on this car before to not entirely sure the suppliers kit would fit up

melville muffler and brake - 9330 1511
2.5 950 (cat, sports muffler, mandrel bent, all fitted)
3 not recommended - too big (says he's seen the 2.5 systems work better than the 3 inch systems over the years)
dump 250 (custom made)
very friendly, pretty knowledgeable

custom exhaust specialists - 9446 9613
2.5 (dump, flexi join, removable cat/dyno pipe)
3
dump
friendly service, seemed fairly knowledgeable and offered many options, told to call me back at 4pm when confirmed

willeton exhaust - 9354 5004
2.5 1100 (dump, cat, flex, mandrel bent)
3 not recommended
dump
fairly informative, friendly

classic and custom exhaust and towbars - 9495 4544
2.5 (no kits available from supplier, but possible to build a custom from dump pipe for roughly 550, unable to quote for from turbo back)
3
dump
called up supplier, called me back a few minutes later, fairly friendly

muffler magic exhaust centre - 9331 3254
2.5 1800 (sports system?) (more for a custom system)
3
dump 400
friendly, fairly informative

autotainment by brian wallis - 9470 4233
2.5 350-500 (no cat, dump, 1 resonator, press bend (not mandrel)
3 unsure
dump
exhaust guy wasn't in shop, told to call 15min later, unsure, would need to see the car first to get a PROPER quote

cannington performance exhaust and brakes - 9451 1334
2.5 1450 (no cat, muffler)
3
dump no price, kit only
friendly, informative

sound exhaust and towbars - 9524 6622
2.5 880 (dont sell the 2.5 inch, but will do a 3 inch dump and then bolt a 2.5 pipe to it)
3 1100 (dump, muffler, flexi)
dump 350 (3 inch, no 2.5)
very friendly, quick

the exhaust centre - 9274 8111
2.5 1250 (dump, no cat)
3 not recommended, say its too big
dump 440 (2.5 inch)
friendly, fairly informative, quick

aaa cannington mufflers - 9451 1444
2.5
3
dump
answered phone while selling to a client in shop, made me hold, turns out yellow pages have the wrong ad, they are a wrecker!

andys exhaust werx - 9361 0144
2.5 1100 (dump, no cat, muffler)
3 not recommended, too big
dump 500
no answer? try again in 10min, finally answered

armadale exhaust - 9495 2544
2.5
3
dump
very loud, lol, friendly, called around to suppliers for quotes, has been 30min and no call back?

australian performance centre city - 9228 1400
2.5 mild steel 980 (custom built, dump, no cat, 2 resonators)
3 not recommended, too big
dump 320
chucked me on hold for 7min then it disconnected, not happy. trying again later, finally got an answer, friendly service, fairly informative

midland exhaust centre - 9274 5066
2.5
3
dump
said he would call back in 5-10min, getting quotes from supplier as none in shop, been 20min with no call back?

 

[maddogrc]

still none of them called back, hmm

 

[Matt - VNET Pro]

Makes me rethink my 3" system after reading all that, I think combined with a chip and other mods the 3" work better but as a standard setup 2.5" seems the way to go.......?
I'm sure they guy that did mine said the standard system he pulled off was 2.5".....?

 

[maddogrc]

standard system seems to be like 2.33?

i'll get the callipers out and do a quick check...

EDIT:

54mm or 2.1260 inches

EDIT:

one of the guys i called said hes located next to a gas conversion mob, and hes seen d22's with 3 inch systems that sound good, but they lose torque.

other guys say you lose torque and for towing it just goes to the crap, even uses up more fuel!

 

[Jason]

Makes me rethink my 3" system after reading all that, I think combined with a chip and other mods the 3" work better but as a standard setup 2.5" seems the way to go.......?
I'm sure they guy that did mine said the standard system he pulled off was 2.5".....?

I measured my stock system and it was 2 1/4"? The system I got from Beaudesert Exhaust was 2 3/4".

 

[Matt - VNET Pro]

I think once I have a chip installed I will definetely need to stick it on the dyno to get some real results hopefully, my 3" system isnt really any louder than standard at all. Still has a cat just a 3" hi flow further back and 2 resignators (think they are called that) from Taipain/ARB. To me it has a noticable power gain already, especially on hills and towing.

 

[maddogrc]

resonators, lol

i guess you do have some backpressure with the resonators and cat, but hmm

we really need a dyno and a few systems to compare

 

[Deejay]

Nice work Maddogrc.

This is partly why I'm thinking of just removing the restriction of the dump pipe only. I think there are better performance gains elsewhere and the original system looks OK.

I want my system to look standard, sound standard and I have no problem with the Cat being in there, it helps burn some of the crap out of the exhaust. Doing my bit for mother nature ;-)

Cheers,

DJ

 

[maddogrc]

still means you have to buy a new cat and have that put into the system, and cats start around 300 or so, so a 350 dump and 300 cat is 650+labour?

i reckon a whole system is probs just worth it instead for the extra few bucks.

i'll have to further look into the guy that might be able to do the system for 300-500 cause that sounds pretty good to me! said he wants a proper look at the car when its on the hoist first though.

 

[Jason]

After installing my system I reckon the stock Cat is more restrictive than the Dump Pipe, just by looking at it.

 

[maddogrc]

After installing my system I reckon the stock Cat is more restrictive than the Dump Pipe, just by looking at it.

the dump pipe itself isnt ALL that restricted apart from the small hole for gases to flow into it and the horrible angle the gases flow into it (they basically hit a wall and are then forced down, no smooth flow)

the worst bit about the dump is that you have a small hole for the gases to come into and then you got a big long stupid cat that the exhaust gases have to pass through until it can finally somewhat escape.

so you got the restriction of the small dump pipe hole as well as the restriction of the cat itself, so a double restriction.

this compared to a nice 2.5 inch curved and 'flowing' dump allows for a quicker flow, less restriction and lower EGT.

but as i was told about the 3 inch systems also, you need to watch out that the car doesnt over boost and cause issues with the engine.

 

[tweak'e]

dump pipe on the ZD30 is fairly restrictive. mainly due to the sharp turn the gasses have to do, the huge angle going into the cat and due to the layout of the wastegate flow cutting into turbo flow. the tight sharp turn has the effect of making it even more restrictive especially at lower pressures.

the cat it self may not be to bad. hard to say without knocking out the insides and seeing if it performed better.
big problem is due to it being so close is it doesn't give much time for the swirl out of the turbo to straighten up. ie you have lot of turbulent gasses trying to get through. really need to let the gasses straigthen out, let the pulses smooth out and it will flow a lot better.

 

[Old.Tony]

The engineers that designed the dump pipe might disagree. In Fluid Dynamics 101, you learn that liquids (gases behave in a very similar manner) don't care about directional changes as there is not a lot of momentum to overcome. As long as the differential volume in the corner is greater than the volume of the pipe you won't experience any issues with flow.

That's the theory. In practice, it might behave a little differently, but not to the point of disaster.

 

[Deejay]

Hi Guys,

Just an update of the DP Chip saga. As you may have remembered from previous posts, after not being happy with the performance of the chip, I sent it back to DP Chip for evaluation and checking.

I sent the chip back on Wednesday last week and it arrived at DP on Friday. I was told that there is usually a 7-10 day turn around. So I figure I'll just call on Tuesday for an update and was told the chip was still sitting on the bench and that they'd call me.

I waited until almost close of business on the east coast before ringing today. This time I was told that the chip is currently under "Live testing" whatever that means. I was told the chip seems to be functioning correctly so far.

I then asked when I was likely to get it back as it has been almost 30 days since I first received the chip and I reckon if the chip performance wasn't going to be any batter than what it was originally, then I'd maybe prefer a refund as 1500 would go a long way towards other mods.

Have now been told that I'll probably get the chip back on Tuesday but more likely Wednesday.

Thus far:
Their initial freight of the goods to me was fast and good.
Their chip looks great and is well finished etc.
Not happy with the chip's performance
Not happy with their non existant 24/7 tech support
Not happy with their customer relations.

Overall : Very Disappointed

Unless they find something terribly wrong with the chip, I reckon their chip is bogus and their promises on the website are exaggerated and fanciful.

I really hope the chip is found faulty or they are able to trick it up.

More will follow next week .....

Cheers,

DJ

 

[maddogrc]

good luck mate!