Comfort Sport Build - Page 37 - Acura TSX Forum
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post #541 of 550 (permalink) Old 03-15-2019, 08:53 PM Thread Starter
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04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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post #542 of 550 (permalink) Old 03-17-2019, 12:53 PM Thread Starter
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04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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post #543 of 550 (permalink) Old 03-24-2019, 06:48 PM Thread Starter
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2019 Resto 1.8: New Brake Booster + Check Valve Workaround



Symptoms

  • Intermittent whistle noise from brake booster at idle after pressing the brake pedal about 80%+ deep.
  • Noise goes away, or change its tune, with any throttle or brake pedal input.
  • Booster does not keep vaccum overnight.
  • Rpm drops by about 50-100rpm when pressing the brake pedal all the way in at idle.
  • Brake sometimes feels spongy and less powerful in the 80-100% brake pedal travel.


The issue was pretty obvious in the booster-check valve. The old check valve passed the simple blow test, but because oem booster is pricey my mechanic tried replacing the check valve first. The oem vaccum tube/check valve assembly was on backorder with no ETA, so he used his 300ZX check valve to connect as a replacement. The inlet/outlet diameter happened to match TSX's vaccum tube.



Brake felt better after the new check valve and the whistle noise was harder to re-produce, but the noise still occurred a few times. So a new booster was installed.

The brake feels much more progressive after the new booster - the pedal travel required to achieve the same brake power seems to increase by 2x. I am not sure I like it, but at least I no longer need to worry about the brake not working when I need it most.
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04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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post #544 of 550 (permalink) Old 04-26-2019, 02:09 AM Thread Starter
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What’s wrong with Acura logistics lately?

TSX brake booster hose on backorder, fine, since the part does not fail often.

Current-gen MDX windshield on backorder with no ETA? Unbelievable...

04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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post #545 of 550 (permalink) Old 05-09-2019, 11:48 PM Thread Starter
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2019 Resto 1.9: Front-Left Shock Absorber Went Bad

Symptoms

- Weak low speed damping. The driver-side rocks, as if the car only rides on spring.
- Noticeable difference in damping response when pushing the car down by hand.
- Area below the top cap/seal is a little wet.

Most likely something went wrong with the MSV (micro-speed valve), because otherwise the shock still responds well to damping force adjustment, and the damping feels OK for larger/sharper bumps.

You might ask why not buy a new set of coilovers? I thought about switching to ST, but the kit is not readily available, and need to be shipped from Europe. The kit also needs top mounts, and I don’t know wether to go Type-S bushing or not. All considered, rebuilding CST makes sense to me - it costs less, takes about the same time, and with a known outcome.

My CST shocks were re-valved in 2015, so seem earlier to go bad. But then I drove the car very hard in 1st half of 2018, and put crazy load on the front left corner. So actually this episode is not a surprise to me. Besides, the constant small vibrations may also wear out the shock one way or another.

04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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post #546 of 550 (permalink) Old 05-10-2019, 12:04 PM
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How much to re-valve?

2004 NHBP TSX 6-speed non-navi with 335,000 miles and counting
Build Thread: https://goo.gl/rTAMlj
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post #547 of 550 (permalink) Old 05-12-2019, 05:37 AM Thread Starter
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Around $150 I think. Rebuild is just $120.

04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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post #548 of 550 (permalink) Old 05-12-2019, 05:38 AM Thread Starter
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Comfort Sport Build

RDX A-Spec SH-AWD

This one has to be a longer read....

With CST front shocks sent back to Tein for inspection/overhaul, the oem front coilovers were called into duty after many years of sleeping. I was curious how the wheel noise would respond to the change, and unfortunately the noise and vibration got significantly worse with the soft oem suspension. I am now inclined to believe the issue is either in the bushings or axle. Not able to identify the root cause quickly, I feel like the car is destroying itself if I continue running it as a daily.

I have to find out the source of the problem, but in a less time-pressured way. That means taking TSX out of daily duty.

The car is too close to my heart to say goodbye now, so the question I asked was, which car compliments TSX the best?

Long story short, after Model 3 was vetoed, M340 feels too excessive/purposeful, and 330 feels good but not great, I stayed in the Acura family and got myself a RDX A-Spec.

For those of you in the market for RDX, my deal was 4.8k off MSRP, including the $1k loyalty credit. Maybe there is more room, because apparently A-Spec models with red seats do not sell well in Bay Area. All A-Spec on the lot were made in 11/2018, and mostly blue color. In comparison, RDX average day-to-sell is 40-50.

My car has high mileage for a new one, but somehow, the powertrain feels smoother than the almost-new RDX I tried before. Maybe just the nature of break-in. The power flows with NA engine response, the AT mostly works behind the scene. Now I understand why the powertrain, especially the engine, is praised.

A few standout items that nudged me towards RDX instead of 330:
- Audio system is killer, punches way way above its class. BMW's "Hi-Fi" system might as well be branded Lo-Fi.
- Excellent storage.
- The car has traditional Honda/Acura virtues, but now feels like BMW- instead of just Honda+.
- Feels like I get more car for similar or slightly less money.

Things I like about RDX so far:
- Audio, yes I know have praised it, but on RDX this really is studio-level sound stage and precision.
- It seems like my FlashPro can be re-used on RDX!
- Ventilated seats!
- Pano roof! But apparently it does not have safety film…
- K20C seems to be as powerful as J35, when the 10AT is in the right gear and when in turbo.
- The car feels balanced, and good enough for everything. Other than brakes, I do not feel like I need to have Type-S for commuting and shuttling kids.
- The tail is responsive, and follows the front surprising well. The front grip feels not great, though I haven’t pushed the car hard enough yet to see if it is suspension tuning or just tires.
- I like the TrueTouch interface more than I thought I would, and the infotainment manages to hide it’s slower speed well with smooth UI transition.
- This is a happy car, but I do not know how to explain it other than say it is easygoing.

Things I do not like:
- Tire noise with the 20” A-Spec tire is loud for a new generation car…
- The LCD screen in the instrument panel is not good. Small texts are pixelated, and the info is placed too low. Acura decided the upper area is reserved for ACC, LKAS, and boost/g meters, and I do not understand why.
- The computer for Infotainment already feels under-powered. Infotainment also has a few bugs.
- Voice recognition is clearly based on Alexa, but is quite slow, like the connection is on 56kbps, and with mixed result. Address is fine, but saying place names rarely work, even though I can find those places using search on the infotainment.
- The A-spec seats are not as comfortable as they should be.
- Even though steering and handling feel good, the chassis feedback feel more synthetic and computerized than 3G MDX.
- Brake is useable, but a bit vague and non-linear. This is probably where Type-S is going to see a significant improvement by using fixed calipers. In fact, I believe the reason A-aspec uses 20” 255 tires is because those will be used by Type-S. So I am hopeful that Type-S caliper/rotor can be dropped into A-spec.
- Other than audio and interior, the car is still not at tier-1 level. For example, chassis stiffness feels less than 330, ride quality is missing the well-damped feeling in the initial response, and in-car tech is at least one generation behind BMW. But then I am getting BMW- for the price of Honda+, so not much to complain really.

04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

sonyfever is offline  
post #549 of 550 (permalink) Old 05-13-2019, 01:17 AM
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Congrats on your new RDX!
There is no perfect car... That is why we build them ourselves 😉
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post #550 of 550 (permalink) Old 05-13-2019, 08:09 AM Thread Starter
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Quote:
Originally Posted by shandalo View Post
Congrats on your new RDX!
There is no perfect car... That is why we build them ourselves 😉

Thanks. That is so true isn’t it.

04 TSX AT
My build thread - Comfort Sport Build

Engine
Phase 1: CT-E I/H, 06 air tube, 06 CAT, reflash
Phase 2: 06 intake cam, 45 VTC, RSP IM, FlashPro
Phase 2.1: HFC, 06 RBB IM
Phase 3: ASP header

Others
Tein CST 8-5 kg/mm with revalve, Progress RSB, Alutec strut bar
Skunk2 Front upper arms
XLR8 BBK (ST-41 4-pot caliper/SS line/One-piece slot rotor)

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