Downpipe differences

[BigBird]

I installed the TSP DP and PRL front pipe at the same time so I can't say for sure the front pipe makes this difference, but to me it seems like the front pipe really helps with sound. Like in cabin while driving I notice there is way more exhaust sound and new frequencies I can hear right under the floorboard which is awesome. I don't mean in a negative way at all either, like with throttle I can just hear the exhaust better and there is a SWEET new set of frequencies at like 4k rpm and beyond that I have been really enjoying.

You can sort of hear it a tiny bit in this video at like 3:28 and he has the front resonator delete like the DE5.


It's way more noticeable in car and the exhaust still isn't that loud externally but it sounds great in cabin imo. This difference could also just be the DP, but I think the front pipe helps amplyify the sound more and the stock fp seems a bit restrictive compared to the rest of the exhaust.

Definitely a majority of that additional noise is the DP

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[Nikw91]

Definitely a majority of that additional noise is the DP

No question a downpipe is proven power, an intercooler is worth the proven cooling power, a rear motor mount, etc…

My question is, is the front pipe worth $400? Doesn’t seem like there is concrete dyno proof that yeah, it makes a big difference

 

[NoviceFL5owner]

Full exhaust will only net you at most 10hp according to hondata. But the benefits of a full 3" exhaust is less back pressure switch means the turbo doesnt have to work as hard and can spool easier/quicker.

 

[Clark_Kent]

Unpopular perspective, but if power is what you're after, you won't get much from a downpipe. Once you tune the car, the gains from a downpipe are minimal (~10whp). For ~$1,000 that's an awful return. The tune is where you see a material gain. Flex fuel is also another big power adder. The other parts are largely noise makers. If your plan is to upgrade the turbo and start to push for power well north of 400whp, the value proposition for bolt-ons begins to make more sense.

 

[BigBird]

Unpopular perspective, but if power is what you're after, you won't get much from a downpipe. Once you tune the car, the gains from a downpipe are minimal (~10whp). For ~$1,000 that's an awful return. The tune is where you see a material gain. Flex fuel is also another big power adder. The other parts are largely noise makers. If your plan is to upgrade the turbo and start to push for power well north of 400whp, the value proposition for bolt-ons begins to make more sense.

100% agree with you on that.

I will still put in a downpipe since the class allows it and I'm trying to maximize all the mods

 

[NoviceFL5owner]

 

[Nikw91]

Unpopular perspective, but if power is what you're after, you won't get much from a downpipe. Once you tune the car, the gains from a downpipe are minimal (~10whp). For ~$1,000 that's an awful return. The tune is where you see a material gain. Flex fuel is also another big power adder. The other parts are largely noise makers. If your plan is to upgrade the turbo and start to push for power well north of 400whp, the value proposition for bolt-ons begins to make more sense.

TSP downpipe is $1000, RV6/MAP downpipes seem to be around $699

$1000 is a lot for 10 whp, I agree.

$699 for 10WHP and the better exhaust sound seems a bit more worth it.

 

[Ktrw]

Unpopular perspective, but if power is what you're after, you won't get much from a downpipe. Once you tune the car, the gains from a downpipe are minimal (~10whp). For ~$1,000 that's an awful return. The tune is where you see a material gain. Flex fuel is also another big power adder. The other parts are largely noise makers. If your plan is to upgrade the turbo and start to push for power well north of 400whp, the value proposition for bolt-ons begins to make more sense.

You're right, in terms of mods that are "worth it", it is primarily just tuning the car and then you probably want an intercooler to maintain power levels. Intakes and downpipes free up restrictions to make some more power on the stock tune, but once you tune the car, the differences are pretty small.

I've seen cars with the stock airbox make ~380hp, 390tq (DynaPack hub dyno, shoutout to drob at IMW) tuned with a downpipe, and ~370hp, 390tq with stock airbox and downpipe from the same tuner. Typically an intake and downpipe with a tune gets you to the 380hp, 400tq range but it varies a slightly car to car.

These cars lack sound though so the money is well worth it to me. Intake noises and a louder stock exhaust makes spirited driving 10x better. Maybe I'm spoiled by having a brother with a big single turbo 1JZ Supra for the past few decades, but I feel like you're missing out if you don't have the boosty noises.

 

[Nikw91]

Even better. $594.99 for a new one

 

[Rhorn]

Whats the best DP for turbo sound? Thats all I care about

 

[NoviceFL5owner]

Whats the best DP for turbo sound? Thats all I care about

Catless

 

[Nikw91]

I read the RV6 downpipe keeps the OEM factory heat shield. Does the MAP and/or TSP downpipes able to maintain the factory heat shield as well?

 

[Nikw91]

I installed the TSP DP and PRL front pipe at the same time so I can't say for sure the front pipe makes this difference, but to me it seems like the front pipe really helps with sound. Like in cabin while driving I notice there is way more exhaust sound and new frequencies I can hear right under the floorboard which is awesome. I don't mean in a negative way at all either, like with throttle I can just hear the exhaust better and there is a SWEET new set of frequencies at like 4k rpm and beyond that I have been really enjoying.

You can sort of hear it a tiny bit in this video at like 3:28 and he has the front resonator delete like the DE5.


It's way more noticeable in car and the exhaust still isn't that loud externally but it sounds great in cabin imo. This difference could also just be the DP, but I think the front pipe helps amplyify the sound more and the stock fp seems a bit restrictive compared to the rest of the exhaust.

It sounds good! Finally was able to watch the video lol you have to do a video of some in car pulls! Curious to hear it!

 

[Ktrw]

I read the RV6 downpipe keeps the OEM factory heat shield. Does the MAP and/or TSP downpipes able to maintain the factory heat shield as well?

The TSP is designed to use the factory heat shield as well, BUT the mounts do not align well with two of the holes on the heatshield so you may have to drill out the holes a little bit on the heat shield itself. It's not difficult to do, you just make the holes a little bigger but yeah I had to do that on mine and I've seen several people online say the same, including in the reviews on TSPs website. Works great after doing that though.

 

[Nikw91]

The TSP is designed to use the factory heat shield as well, BUT the mounts do not align well with two of the holes on the heatshield so you may have to drill out the holes a little bit on the heat shield itself. It's not difficult to do, you just make the holes a little bigger but yeah I had to do that on mine and I've seen several people online say the same, including in the reviews on TSPs website. Works great after doing that though.

I see the RV6 downpipe retains the factory holes but the RV6 looks a lot skinner/thinner then the TSP downpipe

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