3.3TT KHARTUNERZ - NEW CATLESS SECONDARY DOWNPIPES Ark Performance

[Chris71]

That's cool, thanks for explaining.

 

[MrSmoofy]

Maybe just a coincidence but over the weekend a highway drive of about 200 miles I'm seeing 1-2 MPG gain in Eco mode from before changing to this. Again maybe I just got lucky but was the first time I saw the MPG gauge read over 32 MPG was almost to 33 at one point. This was at 80mph mostly in moderate highway traffic.

 

[MrSmoofy]

So just not catching up on the posts here and in the other threads on this topic.

1. I did this more for the community since I was still stock and Nick was offering a deal. Without the deal, I probably would have done a different mod first.
2. I didn't really care about HP from this whether it's 0 or 20 doesn't matter for the exhaust I wanted more sound. I got exactly that. It's definitely louder and has a nice gargle when slowing down to a light in low RPM's. If I want ti quiet it down in the cabin I may go the lining the spare tire area route but for now, I'm enjoying the sound and may not change anything else on the exhaust.
3. I told @NICK_KHAR that I'd most likely just use the offer he gave in his store anyways but am still waiting to hear back from him it's been a week since I have.

This is the first car I've had with any kind of real performance. This was also the very first time I've ever seen a dyno. I tried to gather as much info as possible for the tech before I went so that I could help him as much as possible since it was the first stinger he had seen.

His overall comments were when it was up on the lift were that it looked like a BMW and a Mercedes had a baby pointing out designs from both companies. He also said the LSD looked weak and was probably total crap and said he wouldn't be surprised if it split open at some point which kind of worried me but other then that he was just as excited as I am about moding the car and is looking forward for me to do more work.

This guy works at a performance shop that works on mostly high-end Porsche and BMW so I don't dought he knows what he is doing and has been doing it a long time.

I got connected to him via a friend who is a BMW guy so I got the after business hours friend of a friend rate to do the work and then when he wasn't happy with the dyno numbers he offered to redo it at no cost once he had the correct inputs from Mustang.

So I'll finish with whether your happy with the dyno results or not doesn't really matter to me I did what I could and so far I got what I wanted which was sound and now I just need Nick to honor his offer as a store credit so I can get the next mod which will probably be intakes once I can decide on which ones.

 

[Jonathan Lasich]

Sorry, but I have to say that I've REALLY been disappointed lately in the overall behavior of members of this forum.

I see on this, and other threads, where members go out of their way, in time and expense, to get info that MAY prove helpful in the future to other members of this forum, and yet, through no real fault of their own, they get repeatedly slammed as the methods/results are not up to others exacting standards. What a great incentive for people to do absolutely nothing to help out any others!!

Seems like some members of this forum really need to swallow an enormous chill pill!!

 

[Tonkabob]

I dont think anyone meant any disrespect to you or your purchase. MP is a good cheap way to get some more sound that the car desperately needs.
Dynos were a bit odd, not your fault but i think they served their purpose as we are just comparing before and after.

 

[Callum]

He also said the LSD (Limited Slip Differential) (Limited Slip Differential) looked weak and was probably total crap and said he wouldn't be surprised if it split open at some point

lol, what? Split open like what, a coconut, cashew, watermelon? The dude saw the badge, enough reason to "hate" it. I can't stand mechanics like that. I had one at a "exotic" dealer told me the government mandated KIA to warranty that car since they fall apart so quickly.

I laughed...back on topic..sorry

 

[MrSmoofy]

lol, what? Split open like what, a coconut, cashew, watermelon? The dude saw the badge, enough reason to "hate" it. I can't stand mechanics like that. I had one at a "exotic" dealer told me the government mandated KIA to warranty that car since they fall apart so quickly.

I laughed...back on topic..sorry

He did imply like a watermelon but I'm not a car guy have never wrenched on any car. Most I've done is car stereo, car alarm/remote start, battery changes, air filter changes. Other than that I usually take it to someone I trust isn't going to rip me off.

Until someone has split their LSD open like a watermelon it will just be speculation. If you are the first while it would suck it just means you have enough HP mods on your car that you needed a better LSD anyways.

 

[Pnbnationsbest]

Torque breaks driveline parts, not HP

 

[MrSmoofy]

Torque breaks driveline parts, not HP

See told you I know nothing

 

[Pnbnationsbest]

See told you I know nothing

Lol I wasn't taking a shot at you or anything. Here's how it works normally:

HP breaks engines and engine components
TQ breaks drive complements

 

[MrSmoofy]

Lol I wasn't taking a shot at you or anything. Here's how it works normally:

HP breaks engines and engine components
TQ breaks drive complements

No worries I know you weren't, but I'm eager to learn anything I can so thanks for the links.

 

[ZyroXZ2]

Uhhh, how could he know what your LSD looks like unless he opened up your transfer case?

And based on this thread, he didn't open your transfer case, so he has zero clue what the LSD internals look like, lol... He might just be going off size, though that's not always accurate as the quality of the parts is a huge factor in differential strength moreso than the size of the components.

 

[WildBill]

I imagine that the shop was looking at the rear differential. Smoofy has a RWD which has the limited slip rear.
I have yet to see anyone tear up a rear dif due to the "power" they were running. Any issues earlier on were due to the clutch packs and the gear oil additives.

 

[ZyroXZ2]

I imagine that the shop was looking at the rear differential. Smoofy has a RWD which has the limited slip rear.
I have yet to see anyone tear up a rear dif due to the "power" they were running. Any issues earlier on were due to the clutch packs and the gear oil additives.

Sorry, I'm also an idiot: I meant to refer to the rear differential, I have no idea why I was thinking about the transfer case...

Having said that, looking at the OUTSIDE of the rear differential still doesn't accurately represent what's INSIDE of it, lol... I think he's going off size, which again is only partially accurate

 

[washguy]

Im thinkin Smoofy's shop /dyno guy is an idiot to start with...the nitwit ran a dyno that crossed below 5252 rpms....and then passed it off as a legit dyno run......I wouldn't let that dude put gas in my truck
Wash

 

[Ek9max]

Im thinkin Smoofy's shop /dyno guy is an idiot to start with...the nitwit ran a dyno that crossed below 5252 rpms....and then passed it off as a legit dyno run......I wouldn't let that dude put gas in my truck
Wash

I kinda agree with this. Years ago I had a 911 turbo that I was modding so I took to get a baseline before the mode that I was expecting to add 200hp+.

Got my graph back where the crossover was not at 5252. The tech told me that he couldn't find the tac reading so the Dyno was just guessing off the roller speed........ Not sure how this works but I had up sized wheels and tires so if he was going off stock values that wouldn't be accurate.

Long story short. I asked for a refund.

 

[StungBlueGT2]

Just looked at this one more time and stock is +2 hp at the peak 5500 rpm. (Not the other way around) Its easier to see the small stock tq bump at that rpm giving stock the peak hp advantage.
Its mostly random run variation on the peak. The mid pipe car does have a tiny bit more tq in the low rpms. Certainly can't be felt and probably not measured.

Man you have to stop being so negative. You’re breaking the hearts of mrspoofy & anyone with secondary DPs! Lol.

But it’s really not as bad as you make it out to be. Yes this dyno didn’t show peak HP gains, but it does show noticeable torque gains in the low RPM. Looks like surges of about 10-20wtq from 2750-4250 RPM range. This is likely an indication of quicker turbo spooling and the extra power down low may not help 1/4m times, but stronger midrange would be noticeable and useful for a daily driver.

Lastly, we don’t even know if mrspoofy or mistermac did a few WOT pulls after installing the secondary DPs to make sure the ECU fully adapted to the better airflow. There still may be some extra power available that just wasn’t set free yet.

Either way, I want to thank Mrspoofy and Mistermac for trying to help the Stinger community by sharing their results. Good to know secondary DPs still make about an extra 20wtq and possibly even more once more dynos are provided.

 

[Manaz]

Yes this dyno didn’t show peak HP gains, but it does show noticeable torque gains in the low RPM.

And it's this that counts. You spend less than 5% of your time driving at peak power. The area under the torque curve is what matters (given that power is effectively a function of torque and RPM).

Low RPM is where you are every time you move off from standstill. Low to midrange RPM is where you'll spend 95% of your time driving - and that's where you want the benefits.

 

[Chris71]

And it's this that counts. You spend less than 5% of your time driving at peak power. The area under the torque curve is what matters (given that power is effectively a function of torque and RPM).

Low RPM is where you are every time you move off from standstill. Low to midrange RPM is where you'll spend 95% of your time driving - and that's where you want the benefits.

Which is why I stand by my butt dyno telling me I have more Tork lol

Also, assuming a combination of all 4
Big mouth air ducts, injen intakes, intercooler, and dps but I can tell a very good difference in top end, when I’m doing 65 and punch it the car responds and accelerated faster...again butt dyno but really like it. These dps are a very good mod in my book.

 

[Secondchance]

I've been sharing my no gains in 0-60 times for months but people don't want to believe it.
I thought a stock car would show some gains. But was certain a modded car would be less than 5 hp.

The fact your 0-60 being slower lines up with possible dyno #'s doesn't validate the 0-60 being used to measure hp/tq gains. Science requires us to remove as many variables as possible, specifically those we cant control, like how the temperature can effect the tires ability to grip differently, the road itself you're on, humidity, driver error, and so on. Using 0-60 for anything outside of arbitrary information is frankly nothing more than a massive waste of your time and energy. There are programs you can use and calibrate to show you a "road" dyno graph, and when set up properly using the log files ( can't confirm if the logs you're taking as supported on the program or not, but it's widely used in the Cobb accessport world w/ Mazda, Mitsu, Subaru ) which is a much better way of measuring your gains from previous levels than a 0-60 time measured via a GPS device or the cars computer ?! Is getting to a dyno an issue where you live? I'm just curious why you would spend all this time and energy but chose against doing the logical thing and heading to a dyno for before / after #'s !?