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@Cntrollerfanboy ,

Thanks for the response. I don't feel that I have much lag, and was not looking for the Spectrum Tune to correct that, but was (per their graphs) questioning if the Spectrum Tune lost HP and torque over stock in the low RPM range which could impact being quicker from a dead stop (and yes I understand we are not talking about a sleeper street rod here). It would be one thing see little gains for $500 (which someone said in another thread people would have laid down an extra $500 to the dealership if there was a option that added 10 BHP with another 8 pounds of torque). I guess I was just wishing that someone would give me the magical answer I want in order to make a definitive decision one way or another.

Concerning exhaust, I always loved the sound of the Summit/Hearthrob, but do not trust that it is only mild steel. I like in Massachusetts and they salt the hell out of the roads in the winter. One of the reasons I got the flaps for my car. My car is also an "outside" car as my garage is occupied by the kid's "stuff" (okay, and mine) and will not fit a vehicle. Just don't trust it is going to hold up. Have had too many other vehicles need pipes replaced due to this. I believe I will go the MPx Header & Dual Exit Exhaust System route. It looks like this will give some much better gains and hope;fully couple better with my CAI and OB Throttle Body. Just saving up a bit more coin for this as I will probably have a "professional" do the install for me.

On the non-performance side, I really want to get the MPx GTS Fiberglass Tribute hood and have painted Pitch Black to match the rest of the vehicle. The hood itself is only $300, but then add tax, shipping and cost to paint and you are no pushing a grand (unfortunately). Short term (meaning I was looking this up just before typing this message), I want to finally do the crosshair delete. Just need to find some place that sells the mesh that matches the OEM mesh exactly. However, I won't hijack this thread with questions and research an older one.

Once again, thank you for the response and enjoy talking about this.
yeah our Ohio turn pike is probably just as bad with Salting and I believe they Brine as well, even worse. Which is why i try to take it to the wash often. But it has surprised me on how well it has held up.

I wouldn't consider it a dethread. You were wondering if the Tuner was the best bang for your buck. Since we are talking about it, we are just considering other things that might be a better bang for your buck. :)
 

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Discussion Starter #22
yeah our Ohio turn pike is probably just as bad with Salting and I believe they Brine as well, even worse. Which is why i try to take it to the wash often. But it has surprised me on how well it has held up.

I wouldn't consider it a dethread. You were wondering if the Tuner was the best bang for your buck. Since we are talking about it, we are just considering other things that might be a better bang for your buck. :)
That's true. The best bang for buck in the thread title allows for a broad spectrum (tuner even).....

At the end of the day, the Dart is never going to be fast, so enjoying the look feel and sound is probably even more important than juicing out every last HP.
 

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I think it's more of the Non Manual versions of the Dart. Which also is not that true. In my GT I don't notice any throttle lag, but also I did not notice any on my SXT manual either. The auto was very apparent. The auto GT is geared differently I believe, so that could address some of the issues for you. I noticed in my friends 13 1.4t manual, there was significant throttle lag (different from boost lag). I see OP has a manual so yeah that's probably why the lag is not very apparent.

I did think the tuner gave me some better gains, but ever since I sold it I have not noticed any decrease in performance/mileage. Maybe my car had finally gotten used to it and just reverted back to stock. The awesome forum member on here I sold it to actually took it to the Dyno and got increased numbers. So it's not just smoke and mirrors, but I believe the car will learn it after a while and will probably need reset. I think it was more beneficial on my 2.0 than my GT. I actually bought two of them because the first one was for my 2.0 and did not play nice with my GT. I sold it to my buddy with a 2.0 and it's been flawless for like 5 total years (1 year on my car and about 4 on his). He get's 40+ in his 2.0 all the time.

I would personally spend the money elsewhere on mods. Looks like by your mod list @Mass_Paul , then you have a good selection of parts already. Pretty much everything I have although i don't see an exhaust on your list. If you don't have one HIGHLY recommend this and it's cheaper than the Tuner. https://www.summitracing.com/parts/sum-680017 I think a lot of other members will agree this exhaust sounds GOOD on the 2.4. Not raspy at all and very deep and aggressive sound. Only down side I will note though is it's not Stainless Steel. I live in Northern Ohio and have had it on 3 years. I try and keep it washed every so often and it is still looking and sounding great. It might not give you as main "gains" as the tuner, but it will increase it a bit and sound great. Find some aftermarket exhaust tips to add on to it and you would be very happy. Unless you don't want to modify your exhaust, which is totally fine or if you have one. lol

Other non-performance options might be HIDs. I am the light specialist and I have a write up for their HIDs below in the sig. A pretty good price too and good stuff.
With the GT auto I see no lag at all. It's kinda the opposite problem, when you barely press the gas pedal from a stoplight it goes right away and slightly spins the tires. If the road is wet, it's horrible. I think the 2.0 has the most noticeable lag, as that is where most of the complaints are coming from on the .org.
 

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That's true. The best bang for buck in the thread title allows for a broad spectrum (tuner even).....

At the end of the day, the Dart is never going to be fast, so enjoying the look feel and sound is probably even more important than juicing out every last HP.
IMO, I would NOT get the header then. It will make it sound way too raspy and loud. I've yet to hear a Dart with the header that doesn't sound like a can of angry bees.
 

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Discussion Starter #25 (Edited)
IMO, I would NOT get the header then. It will make it sound way too raspy and loud. I've yet to hear a Dart with the header that doesn't sound like a can of angry bees.
I thought the MPx exhaust cures this issue when coupled with the header? I was under the impression that the header sounded like this when coupled with the stock, or other 3rd party, exhaust. Granted, does not seem to have that low, burble note of a muscle car (which some of the other exhausts provide), but does not sound overly "ricey", raspy sound when coupled together (video below). However, have not heard one in person:

Can't get video to embed, or even the link to show. it can be found by scrolling down this page:

https://www.modernperformance.com/product/mpx-header-and-dual-exit-exhaust-system-with-mufflers-package-dart/13-16-dart-24l-exhaust-exhaust-systems-and-headers
 

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IMO, I would NOT get the header then. It will make it sound way too raspy and loud. I've yet to hear a Dart with the header that doesn't sound like a can of angry bees.
If paired with the mpx exhaust, the sound isn't raspy or too loud. Sure, it's louder, which was to be expected, but it's not as loud as doing a muffler delete and even less raspy vs stock
 

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Discussion Starter #27
If paired with the mpx exhaust, the sound isn't raspy or too loud. Sure, it's louder, which was to be expected, but it's not as loud as doing a muffler delete and even less raspy vs stock
Thanks. Seeing as @Anch has this setup, and can give a first hand opinion, that is a solid testimonial. Nice to be able to improve the stock tone and still pick up HP at the wheels. Per MPx:

"We have not dyno tested this header and exhaust combination before and after, but we have tested them separately. The header gained about 11-12 horsepower at the wheels (or about 13-15 engine horsepower) , and the exhaust gained 7-8 horsepower (about 9-11 horsepower at the engine) by themselves. Together, we would expect a 18-22 hp increase at the wheels."

However, I will admit that the Summit exhaust does sound great on the videos I have seen and can completely understand why people prefer this over others.

Sent from my Z982 using Tapatalk
 

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Do you have any videos of it on your car?
It's in my to do list since May in between repainting my brake caliper and asking my friend to take some photos of the car. :p At the moment, I'm trying to get as ready as possible to buy my house so the to-do list is kinda long
 

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Discussion Starter #30 (Edited)
Do you have any videos of it on your car?
Killraven, I think you are referring to the noise the MPx Header/Cat makes with other exhausts (not the MPx Dual Exhaust made to "temper" the bee's in a can) like this below I found on YouTube:



 

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Killraven, I think you are referring to the noise the MPx Header/Cat makes with other exhausts (not the MPx Dual Exhaust made to "temper" the bee's in a can) like this below I found on YouTube:

Yes, that is what I have watched along with a few others on youtube. That's why I made my initial warning, who the hell would want their car to sound like THAT. The video you linked from mpx sounds nothing like that, interesting...

I wonder what the difference is with the MPX exhaust compared to these other brands. Perhaps a thinner pipe thickness or totally different mufflers?
@Anch , you seem to have everything modwise you can get on your Dart. How would you rate the car now that you have all these items installed? A significant difference from stock? Love the color of your car as well, there is one down the street from me...looks beautiful.
 

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Discussion Starter #32
@Killraven...obviously @Anch can give a better answer, but per MPx's website, the dual exhaust was made specifically for the MPx Header/Cat. I believe if you bought this exhaust without the Header/Cat, you would have a very, quiet exhuast note:

This Exhaust System was prototyped with the MPx Header & Downpipe, and revised several times until it had a sporty exhaust tone and just the right amount of noise suppression. We tested many different resonators and mufflers, and the end result is a fantastic looking system that does not drone on the highway, has a deep tone at idle, and a sporty (not obnoxious) tone at full throttle.
 

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Yes, that is what I have watched along with a few others on youtube. That's why I made my initial warning, who the hell would want their car to sound like THAT. The video you linked from mpx sounds nothing like that, interesting...

I wonder what the difference is with the MPX exhaust compared to these other brands. Perhaps a thinner pipe thickness or totally different mufflers?
@Anch , you seem to have everything modwise you can get on your Dart. How would you rate the car now that you have all these items installed? A significant difference from stock? Love the color of your car as well, there is one down the street from me...looks beautiful.
I would say that overall, I'm really happy with how the car drives and feel after everything I did. I might check into dynoing it to see whats kind of whp it does with full bolt on. I can now follow a stock or lightly modified k24 (intake-exhaust) so should be around the 170whp.
 

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@Killraven...obviously @Anch can give a better answer, but per MPx's website, the dual exhaust was made specifically for the MPx Header/Cat. I believe if you bought this exhaust without the Header/Cat, you would have a very, quiet exhuast note:

This Exhaust System was prototyped with the MPx Header & Downpipe, and revised several times until it had a sporty exhaust tone and just the right amount of noise suppression. We tested many different resonators and mufflers, and the end result is a fantastic looking system that does not drone on the highway, has a deep tone at idle, and a sporty (not obnoxious) tone at full throttle.
Most 3rd party exhausts and stock do not have the resonators that the Mpx one has. That is the golden ticket to making it sound better. I believe it's 2 individual mufflers on each pipe and a big Reso in the center that keep the angry bees at bay. I believe at one point they had an exhaust (maybe still do) that did not have all the extra components. For those who didn't have the header, and then you can add the resonators on for extra to quiet the exhaust.
 

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.3 to .4 of a second or 3 to 4 seconds off the 0 -60?
DEFINITELY NOT 3 to 4 seconds. haha That's a HUGE difference. He meant .3 to .4. Which is about half a second, which is not terrible. That could even equate to 1 second off your quarter mile, which is a pretty good improvement.
 

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.3-.4 for sure in my runs, but maaaan wouldnt it be sweet to get 3-4 seconds knocked off. You might even get whiplash while launching lol
 

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So I have the spectrum tuner and bo throttle body, cai and lightweight pulleys. Just added mpx header and noticed a slight drop in performance just throttle response and lower end torque, most likely a tune issue of some sort.
 

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So I have the spectrum tuner and bo throttle body, cai and lightweight pulleys. Just added mpx header and noticed a slight drop in performance just throttle response and lower end torque, most likely a tune issue of some sort.
The RRM tuner is only a piggyback tuner as in it sees what's going on, does it's thing and tells the ECU something different and it responds. It's basically a hack if you think about it, but it does work pretty well.

An example would be for the intake sensor if you monitor it normally things look realistic, but if you connect the RRM tuner and gun it it will tell the ECU that your intake temps are 55 degrees F.

I think the header might be your issue though based on previous posts but I'm no expert on this. Maybe you have an exhaust leak?

Again I have not tried it myself.....
 
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