Nirvash - E46 330i - Green

[ChrisBrand]

Very nice!

Where did you have the exhaust done?

I have not really seen an e46 which doesn't have that dip @ 3500 - 4000.

Mine has it as well.

Its just an e46 thing

 

[nirvash]

Very nice!

Where did you have the exhaust done?

I have not really seen an e46 which doesn't have that dip @ 3500 - 4000.

Mine has it as well.

Its just an e46 thing

hey, i had the exhaust done with a guy called Lincoln in retreat, seen the work he has done on some rs4's and amg's and looked very impressive,

i wonder if with some software/tuning if we can get rid of that dip, i dont like the feel of it when driving,
car makes a bit more torque below and above that dip but its a ugly spot for it to be in my opinion,
the car use to build power and torque so nice an linearly, i can feel that dip while driving and would like to flatten in out if possible,

also i would like to experiment with the exhaust a bit more, thinking of running dual 50mm from branches to back (instead of the 50mm to 57mm) with 2 large boxes, and dual exit tips at the back once i get my m tech 2 bumper fitted at the back,
just an experiment but i think this system should produce good results, will see

would also like to get rid of the small section with crush bends on my exhaust at the moment

 

[ChrisBrand]

Thanks bud. Ya even with software (UniChip) I still have that dip. My car is only decatted with straight pipes in place of the cats and a secondary resonator before the back box.

 

[Zound]

Was the dip only noticeable after doing the exhaust mod?
I talked to a guy running a gold 330i in the local SA racing events and he told me that he had tried multiple setups but returned to the stock exhaust with a Decat because it yielded the most power on the dyno. He said the same thing about the intake, he tried CAI and reverted back to the stock box with a K & N filter.

 

[nirvash]

Was the dip only noticeable after doing the exhaust mod?
I talked to a guy running a gold 330i in the local SA racing events and he told me that he had tried multiple setups but returned to the stock exhaust with a Decat because it yielded the most power on the dyno. He said the same thing about the intake, he tried CAI and reverted back to the stock box with a K & N filter.

thats interesting,
yes only after the exhaust mod,
i still have my stock system, maybe should just try decating that with free flow boxes,
i also have a k&n filter with the stock box,

according to the dyno my car was stronger with the stock system, hmmm

e46 thing that aftermarket exhausts arnt the best?

 

[individj]

they're probably very well developed. headers maybe best bet

 

[Zound]

The aftermarket system may very well take full advantage of having a unique flash/tune done by a competent tuner to utilise the new unhindered intake and exhaust, but the question is, to what extent and will it be significant enough to be noticeable?

With regards to the gold 330i, he was running a Dastek Unichip I believe. The car was running 1:14's around Zwartkops which is a very respectable pace for a naturally aspirated 4 door saloon.

From my side, up here in Gauteng, I'm running the stock headers decatted, and post modification I feel the car is strongest at 3200rpm and upwards, and especially in the 3500-4000 range. I'll need to confirm this with a dyno graph but that's what my butt dyno tells me.

 

[nirvash]

they're probably very well developed. headers maybe best bet

you mean the stock system?
i have viper headers form axis on

@zound, before 3000-4000 is where mine felt strongest before, now thats sort of the weak spot which is hard to get use to

im very tempted to try and use the viper headers couples with a stock de-catted freeflow box system

 

[ChrisBrand]

they're probably very well developed. headers maybe best bet

you mean the stock system?
i have viper headers form axis on

@zound, before 3000-4000 is where mine felt strongest before, now thats sort of the weak spot which is hard to get use to

im very tempted to try and use the viper headers couples with a stock de-catted freeflow box system

Did you have to modify the exhaust for the Viper headers?

AFAIK its not a straight swop

 

[nirvash]

they're probably very well developed. headers maybe best bet

you mean the stock system?
i have viper headers form axis on

@zound, before 3000-4000 is where mine felt strongest before, now thats sort of the weak spot which is hard to get use to

im very tempted to try and use the viper headers couples with a stock de-catted freeflow box system

Did you have to modify the exhaust for the Viper headers?

AFAIK its not a straight swop

the system i have now i bought the mid and rear section so had to make up the "down pipes" from the headers to the rest of the exhaust, the flange is different on the vipers to the stock ones so yes it isnt a straight connection,

when i put the stock system back on the section connecting the headers to the exhaust will have to be modified

 

[Zound]

I know it's a costly exercise, but if you have your stock headers decatted (like I did) and bolt that back on with the stock exhaust system, it would prove for a very interesting dyno comparison.

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[nirvash]

I know it's a costly exercise, but if you have your stock headers decatted (like I did) and bolt that back on with the stock exhaust system, it would prove for a very interesting dyno comparison.

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indeed, unfortunately i dont have the time and money for that currently, i am interested to see the difference with the "freeflow stock" system put back on though

 

[moranor@axis]

for what its worth i felt no real performance difference between the stock and freeflow sections mid to rear only real difference was sound

two systems i have had are:
Viper branch > duel 57mm free flow
Viper branch > single 76mm > 63mm (stock rear boxes)

both were an improvement over stock and I did not get the dip with ether

 

[nirvash]

for what its worth i felt no real performance difference between the stock and freeflow sections mid to rear only real difference was sound

two systems i have had are:
Viper branch > duel 57mm free flow
Viper branch > single 76mm > 63mm (stock rear boxes)

both were an improvement over stock and I did not get the dip with ether

thanks for the info,

with that in mind, i dont want to go single as appose to dual system,
also if my power is the same, but i get the same stock delivery with a better sound i will be happy with that, really dont like the dip at the moment,

didnt know how well i had it of with the stock system, not sound wise but performance wise,
if the car wasnt daily i would be fine with what i have now

 

[symmat001]

Nice build Nirvash

Best colour combo and i actually like the pre-facelift e46 better. Its aged better. Here's your lower twin.

http://www.stanceworks.com/forums/showthread.php?t=28213&page=7

 

[andre320D]

for what its worth i felt no real performance difference between the stock and freeflow sections mid to rear only real difference was sound

two systems i have had are:
Viper branch > duel 57mm free flow
Viper branch > single 76mm > 63mm (stock rear boxes)

both were an improvement over stock and I did not get the dip with ether

thanks for the info,

with that in mind, i dont want to go single as appose to dual system,
also if my power is the same, but i get the same stock delivery with a better sound i will be happy with that, really dont like the dip at the moment,

didnt know how well i had it of with the stock system, not sound wise but performance wise,
if the car wasnt daily i would be fine with what i have now

I changed my e46 330i exhaust 2 weeks @ viper. I had dual 57mm. Abel advised me to go 50/57mm. Noticeable difference in performance and Im very happy with the result.

Good luck bud.


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[KPM3_30]

I changed my e46 330i exhaust 2 weeks @ viper. I had dual 57mm. Abel advised me to go 50/57mm. Noticeable difference in performance and Im very happy with the result.

Good luck bud.


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Not to thread-jack but since we are on the topic, did you do the branches and full free-flow system with Abel? I have been waiting quite a while to do mine.

 

[andre320D]

I changed my e46 330i exhaust 2 weeks @ viper. I had dual 57mm. Abel advised me to go 50/57mm. Noticeable difference in performance and Im very happy with the result.

Good luck bud.


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using Tapatalk

Not to thread-jack but since we are on the topic, did you do the branches and full free-flow system with Abel? I have been waiting quite a while to do mine.

I have a TNT branch at the moment. I asked Abel to change it to the viper branch but he refused and told me that my one is still in good condition. He only did the free flow system. All I can say it is worth the pennies

Do it


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[nirvash]

@symatt001 wow!:skit: damn i love the stance and how that e46 looks in the pics you posted, inspiring, love it!
just need to get that low on my car now:rollsmile:
love oxford green sooo much, my favourite colour for e46 and e39, and works so well with cream leather,
just need to sort out my peeling clear coat bonnet now to, annoying me so much when i see my car:thumbdo:
also liking the pre f/l more and more

@andre320d im happy with the performance gain everywhere else besides the flat spot mentioned right in the middle of my rev band which use to be the most fun spot on the car but now is lacking,
up top it really pulls nice, and the sound...just wow:rollsmile:

i also have the 50mm into 57mm as mentioned,
wont be changing anything soon on the exhaust though as after selling my vaders and s/c kit i bought a super neat e34 yesterday that i will be collecting on the weekend,
will be the weekend fun car:=):
feeling very poor atm now

---

joining the mafia:cartel:

 

[moranor@axis]

try cleaning the Disa valve you will probably find the exhaust is just highlighting a problem that was already there but less noticeable with the old system

I had no dip and andre320d seems to be fine with a similar setup