Phase 5 - essentially complete (including vids)...

[DAYTA]

Well, it's essentially done. The tuner's wife had a baby a week before I was supposed to get my car tuned, so I had to wait 5 agonizing weeks. It went on the dyno on Saturday and is running strong, but not entirely done (more on that later...)

New mods in Phase 5:
- K-Pro
- 3.0" pulley
- Bosch 725cc injectors
- machined VTC pulley to 45 degrees
- 375mL/min water/methanol nozzle
- Hytech header
- Hytech cat
- modified B-pipe on Comptech exhaust

I made 304whp/225wtq on a Dyno Dynamics dyno. I will upload the scanned plot later. Many people consider these the "heartbreaker" dynos, but I'm happy with the results. For the sake of consistency, I will also be making a few more pulls on the Dynojet I had run before. The consensus seems to be that on average, Dyno Dynamics read 10-15% lower than Dynojets so I'm hoping to see around 338whp/250wtq which would be a HUGE improvement over the previous setup (3.2" pulley untuned, 276whp/211wtq).

Initial impressions are . The car just pulls absurdly hard. Thanks to a good partial throttle tune, it's also as smooth as it was stock at any load. In order to prevent valve float, we kept the redline to 7600. Running a properly tuned setup with properly large injectors makes the engine feel so much more solid than before, and with the water/meth there is less chance of detonation issues at higher boost levels. Speaking with the tuner, he told me he kept it a conservative tune (timing limited to 21 degrees) rather than advancing ignition and cutting fuel to offset the water/meth. In fact, he actually tuned it the car to run without water/meth at all. By doing this, I can still run the car if there is an issue with the injection process (pump failure, nozzle clog, etc), yet I can also gain the cooling and octane boost advantages of the water/meth as the Stage 2 kit can inject progressively with boost levels. I won't be getting as large of a gain as I would have with a more aggressive tune (he thinks 15-20whp @ 26-27 degrees), but as this is my DD I need it to be reliable.

The Hytech header + cat just sings. I've mentioned it before, but I really disliked the raspy sound my car made with my CT header + RT cat. However, with the Hytech setup the raspiness is now completely gone, replaced by an insanely aggressive tone that is truly addicting. There were some minor fitment issues (initial bend on the primaries wasn't angled enough, needed to be heated and rebent), but it worked out fine in the end. I kept my Comptech catback as I believe it provides sufficient flow (2.5" B-pipe inlet to 2.25" Y-pipe to the mufflers). The B-pipe was shortened by about 1 foot, so this catback has to stay with the header+cat as one system.

Now for the vids:

Dyno pull (front)



Dyno pull (rear)



Acceleration run (25-70MPH, 2nd-3rd gear)



Acceleration run (40-115MPH, 3rd-4th gear) *Disclaimer* I don't normally speed this fast...



Issues
1) There is a bad buzzing sound that is coming through the speakers. It sounds to me like a ground loop issue, but I can't figure it out. The shop guys and I tried grounding the new ECU and the fuel rail, but nothing has worked so far.
2) Intermittently, I hit lean cut mode @ 3500 RPM (K-Pro senses high A/F ratio above acceptable limit and cuts fuel immediately, feels like car autobrakes HARD). It only activates at EXACTLY 3500 RPM and I'm not sure why.
3) Idle is a bit off. Even when the car is warmed up, it fluctuates between 700-850 RPMs. It hasn't stalled, but it's not smooth either.

Overall, barring the corrections of the issues above, I am more than satisfied with where the performance of my car is now. The way I see it, any more power than what I'm making would most likely require upgraded internals which I don't really want to think about (for now J). I feel like I'm at the limits of what's capable on a stock K24. I will post the Dynojet results once I get them this Wednesday .

[ying]

great results man, that thing just pulls.

[Back2Honda]

Incredible! I bet it was worth every penny. What's your avg mpg?

[zhieson]

Pretty sweet setup. Too bad its so costly to get such great gains.

[TSX_WS]

Big respect to u, DAYTA. 725cc injectors? Thats so tight.

[tsx240]

whats the 1/4 mile time?

[Phisigbrotha]

Just got a stiffy.

[audioserf]

I haven't ridden in DAYTA's car (yet), but he brought it by my place on Saturday afternoon (while I was elbow-deep in a friend's blown Chrysler 2.7L, that engine can blow me btw). It sounds amazing when revved, I can only imagine what it sounds like under load.

If all goes as planned, we'll both be dyno'ing our cars on Wednesday (although my dyno results with "only" a supercharger are going to be hilarious next to his car, lol).

Good stuff Jason.

[xjohnkdoex]

that is probably the meanest sounding TSX i've heard so far.

congrats with the progress!

[evertp1]

thankfully its 6 spd

[iVtecDTsX]

I love this car!!

[chuson]

Can you take me for a ride?

[Highrev1]

Did you input dead times within KManager. You can input 8.00, 10.00, 12.00, 14.00, 16.00 for the volts and the values will get updated by KManager but the dead times follow the table. Just figure out your Fuel pressure...MIGHT help with the lean cut issues.

[xjohnkdoex]

Originally Posted by chuson

Can you take me for a ride?

with that much power/speed, he'll probably be at your place by 2 or 3PM today

[DAYTA]

Thanks for all the comments, guys!

Originally Posted by TSX_WS

Big respect to u, DAYTA. 725cc injectors? Thats so tight.

Yeah, the fuel system was basically kept stock. The stock FPR was crushed for additional flow, but that was already done abck when the S/C was initially installed. From what I've read/heard, the Bosch injectors atomize the fuel better than others, so they can provide an even delivery without having to increase pump pressure. In addition, the tuner said their efficiency makes them easier to tune with and scale back flow accordingly.

Originally Posted by tsx240

whats the 1/4 mile time?

Not sure. I've never taken it to the track, but I might consider it down the road. I drive my cars hard, but I don't like the idea of hard launching or powershifting, especially since it's my DD.

Originally Posted by audioserf

If all goes as planned, we'll both be dyno'ing our cars on Wednesday (although my dyno results with "only" a supercharger are going to be hilarious next to his car, lol).

Good stuff Jason.

Thanks dude. Can't wait for Wednesday either - cause that means a day off work! It should be a fun drive back from Excelerate's shop to ICS .

Originally Posted by chuson

Can you take me for a ride?

Originally Posted by xjohnkdoex

with that much power/speed, he'll probably be at your place by 2 or 3PM today

Actually, if I engage the flux capacitor I can be there in 4 nanoseconds .

Originally Posted by Highrev1

Did you input dead times within KManager. You can input 8.00, 10.00, 12.00, 14.00, 16.00 for the volts and the values will get updated by KManager but the dead times follow the table. Just figure out your Fuel pressure...MIGHT help with the lean cut issues.

To be honest I'm not exactly sure what values were entered into the cal. I didn't tune the car (nor do I know how to) but I will definitely inquire about this. Thanks for the info!

I'm also wondering if my lean cut issues could be due to:
1) Faulty O2 sensor (doubtful since it was just swapped out to a new one per direction from Hondata)
2) ECU having issues transitioning between open loop and closed loop