R36 Deleting the exhaust drone accomplished!

[Jakeys]

drone on normal R36? never heard of it

I think I know what he means. My car does that, but only when cold and the car revs a little higher on idle, it stops itself very quickly once it starts to get up to temp.

Replacing the cats and doing the J pipe is interesting indeed. I assume the bulk of the $1100 cost is the cats themselves right? I should look into this, I ran into a similar boat, want an Arqray system but they're $3k+ which is a bit high for a steel catback just for noise. Supersprint obviously even worse. (And ugly oval tips...)
Innotech is the best easily but the price they are charging is literally hilarious, it is so bad.

[Mr R36]

Thanks guys glad to help solve this infamous problem!

How do i post vids? Unfortunately i dont have a before sound inside the cabin but I'm sure you all know what it sounds like. I can post vids up asap (Maybe youtube)

Re idle drone: hmm i didnt experience this with a stock exhaust. It has some deepness to it but i like that. I just didn't like that annoying low frequency drone while cruising around 2200-3200 rpm urgh.

Yes the cats are the expensive part but honestly i think it's pretty cheap overall because there are two cats needing change and phantom plugs so the o2 light doesn't come on. Add that with labour it works out well. also cat is probably the only part of the exhaust that will change performance as the system is straight through. So by increasing flow i can only imagine power has increased, even marginally.

[dannyjak]

Youtube sounds good!

Aiming to go the non-cat replacement route to save some $$

MrR36 can you provide more pics or info of the J tube lengths and position where they are resting?

[Mr R36]

I can get some pics up next time I'm at the exhaust shop. I'm toying now with the idea of a remus muffler + valve control. now that I've got the type of noise in check , my next step is getting it more grunt and louder but it must be controllable so i don't sound like a hoon 24/7...only 22/7 (jk)

P.s does anybody know where i can get an air intake? preferably gruppem but the rarity and cost is almost pushing me towards forge motorsport.

[Jakeys]

Just be careful with the Gruppe M, it fits fine and is fully functional but because it was designed specifically for the R32, it curves away from the front of the car a bit too much and leaves a gap. It is purely aesthetic, up to you if this is a problem or not given the money you're paying. It's easily the nicest intake other than maybe the Volkswagen Racing ones (Which I don't think exist for the R36, happy to be proven wrong here) but it's not a perfect fit for the R36.

Other options that I know of are the Forge and the EVO-MS which is what I have. It just comes down to budget and what you want it to look like in the bay I think, performance and sound differences will be negligible.

[Mr R36]

You have both a forge and evoms? Are you willing to sell the forge? I'm giving up on ghr GruppeM due to rarity and exactly what you said - purely aesthetics and costly

[Jakeys]

No I just have the EVO-MS. Sorry if I wasn't clear with the post.

[Steve]

I haven't noticed any drone in my R36. I've always wanted it to sound better, though, but I haven't done anything about that problem in seven years. If I weren't toying with the idea of selling the car I'd be all over a more ridiculous sound, but... hm. Decision.

[damo_t]

Youtube sounds good!

Aiming to go the non-cat replacement route to save some $$

MrR36 can you provide more pics or info of the J tube lengths and position where they are resting?

I think I'm asking the same question as Danny here, MrR36. Would it be worthwhile to remove the suitcase and replace with the J-pipe if you aren't replacing the cats?

Would you effectively get the suitcase delete sound without drone between 2k-3k rpm?

Apologies if I am repeating Danny's question.

Thanks in advance,
Damo

Sent from my HTC_PN071 using Tapatalk

[dannyjak]

Keen to know the answer =)

Damo, potentially we can get a group buy happening haha

I think I'm asking the same question as Danny here, MrR36. Would it be worthwhile to remove the suitcase and replace with the J-pipe if you aren't replacing the cats?

Would you effectively get the suitcase delete sound without drone between 2k-3k rpm?

Apologies if I am repeating Danny's question.

Thanks in advance,
Damo

Sent from my HTC_PN071 using Tapatalk

[Mr R36]

Let's turn to logic...and opinion lol. Depending on how long you plan to keep the car for, anything over 2 years I would do minor mods because:

1.The car will continue to depreciate regardless of mods

2. Mods in my opinion will not change the value of the car to the prospective buyer based on:
- pricing of the car at the time of sale (anywhere from 16-25k in 2 years time) will attract a different customer demographic compared to brand new buyers
- empirical evidence: everyone on this forum owning an R36 wants to change the sound anyway

3. reward versus cost: from 300 - $2400 (intake, cat, tune) extra in total over two years you're essentially paying $2400 (dw about discounted cash) or $25/week for more out of your car. How much do you value driving experience? Imagine buying the R36 brand new again and that feel.

In my opinion for a small price to pay for little risk, I'm getting a better car and better everyday driving experience.

- pitch over haha

[Mr R36]

Re J pipe: I don't know as I'm no expert but what I was told and have read suggests that the J Pipe alone decreases drone and increases rasp due to the pulsing inside the chamber. I can only imagine that the difference in gaining rasp is marginal compared to decreasing drone. High flow cats will change the tone of the exhaust -definitely more tinny and raspy but its the rear muffler that will largely determine noise level

If you're all in Melbourne and want a group order I'm sure the muffler man will work up a deal. From what I've been told though they don't make much money from customising the J pipes but they do want to work more with the vee dubs so i think it's an area worth exploring.

[Mr R36]

Hey guys I'm trying to upload on YouTube but it says upload suspended 0%. any idea why?

I've uploaded once before.the only difference is that it was private and not public sharing.

[Jakeys]

I'm in Adelaide so I can't partake as it would be pointless shipping me anything as it is not bolt on. I'd like some pics and/or dimensions though so I can take something to show a local exhaust shop as I think you might have come up with quite a good idea here. The only thing stopping me doing suitcase delete is the drone reports, if this fixes that, I'm interested, because it's about $3000 for an Arqray catback, or it sounds like you could do this with the high flow cats for under half the price. And I might even just do it and keep stock cats for even less, I'm not looking for crazy loud, I just want that awesome crackle.

(No idea on Youtube btw.)

[Mr R36]

Update: I can't believe it but I've managed to get even more crackle, rasp and less drone. It's more noticeable in cabin now and all other features such as drone during cruise and idle noise remains in all fairness unchanged. I suspect however that cold start will be louder as per priming of exhaust but that will subside in about a minute.

How did i achieve this?

I deleted one hot dog resonator (right before the cat) and replaced with straight pipe. The muffler man suggested i don't do both hot dogs to begin with. One deleted also creates an uneven note which further adds to the crackle. I also have pictures which I'll now learn to upload