DBW with K-Pro Update!
09-13-2007, 04:07 PM
#1
Special-K
Thread Starter
DBW with K-Pro Update!
Ok.. i went back and forth in emails with Matt from Red Shift. What i found out was that you can run a TSX with K-Pro! This is what im gonna need.. an RSX ecu. It will be the piggy back to the TSX ecu and K-Pro. The TSX ecu will continue to run the gauges/AC/Traction control/etc. AND will not disable DBW! while the RSX ecu and K-Pro runs the motor. One problem is finding a harness for this.. A few people have them, i just have to see where i can get this done. I dont think Hondata has this harness or we would've had K-Pro by now because they did something like this for the S2000 already. I might be picking up a K20a2 head this weekend.. 
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09-13-2007, 06:27 PM
#8
Drives With Hands
Originally Posted by aaronng
Hytech was advertising this harness with their package.
09-13-2007, 06:58 PM
#9
Special-K
Thread Starter
Originally Posted by Black_6spd
Did you look into simply having it reflashed with the Grand Am II kit?
09-13-2007, 07:03 PM
#10
Driver/Detailer
I hope you are building the bottom end as well if you want to use a k20a2 head. Over at our Aus forums, someone just shot a rod out of his k20a/k24a combo with BC spec C cams because the limiter was set to 8200rpm. He revved to redline at least 3-4 times each drive and the engine only lasted a few weeks.
09-13-2007, 09:39 PM
#12
I Quit
Originally Posted by godfather2
if u find a FEASIBLE solution you're the man
09-13-2007, 09:45 PM
#13
Let me help you!
This has been known for a while...it's the mystery harness that no one knows about. I've even heard rumors about how expensive the harness is, etc.
Anyway, I hope you figure it out. No one else is as motivated as you are in getting this done lol
Anyway, I hope you figure it out. No one else is as motivated as you are in getting this done lol
09-13-2007, 10:12 PM
#14
Special-K
Thread Starter
Originally Posted by SoCaliTrojan
This has been known for a while...it's the mystery harness that no one knows about. I've even heard rumors about how expensive the harness is, etc.
Anyway, I hope you figure it out. No one else is as motivated as you are in getting this done lol
Anyway, I hope you figure it out. No one else is as motivated as you are in getting this done lol
Yea.. i noticed this..haha I'll be picking up the K20 head this weekend or maybe even tomorrow if the guy gets back to me by then. Im going to be honing the block as well... and getting a three-angle valve job while im at it. I'll be doing Rods/Pistons/Sleeves/Valve springs/Retainers/injectors/fuel pump.. alot of work. Its gonna take for this since i havent started anything yet. Im waiting to see about this harness but need to get this k20 head now because i might not run into another one since im here on the east coast and nobody from the west wants to ship!
09-13-2007, 10:20 PM
#15
Originally Posted by MrHeeltoe
K-Pro Conversion Harness, Not Including K20 ECU , $850.00 2 weeks
This is a custom dual ECU setup. Not endorsed by Hondata, but we assure
you it works. This is a racecar deal. That means thinks like traction
control and vehicle stability control are not going to function
properly, or at all probably. So for performance and whatnot it will
work fine. But we are not recommending for a street application!
09-13-2007, 10:25 PM
#16
Special-K
Thread Starter
Ok.. thats an awesome find! Im fine with losing traction control.. I emailed Hytech about their harness so i'll wait to find out what they have to say about it. If i'll still have AC and my guages i'll be fine... I never use VSA
09-14-2007, 02:44 PM
#18
Racer
why are you swapping heads?
the k24a2 head is the same as the k20a2 head or thatīs what I thought. only difference beeing cams and 25° vtc instead of 50° for the k20a2?
the k24a2 head is the same as the k20a2 head or thatīs what I thought. only difference beeing cams and 25° vtc instead of 50° for the k20a2?
09-14-2007, 05:06 PM
#19
10th Gear
Join Date: May 2007
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I can/t remember the name off the top of my head, but I know there is someone on honda-tech that makes the harness too.. for a lot cheaper than hytech. He was doing this even before hytech released theirs. I will try to remember his name if i can 
09-14-2007, 07:46 PM
#20
Special-K
Thread Starter
Originally Posted by h1coupe
why are you swapping heads?
the k24a2 head is the same as the k20a2 head or thatīs what I thought. only difference beeing cams and 25° vtc instead of 50° for the k20a2?
the k24a2 head is the same as the k20a2 head or thatīs what I thought. only difference beeing cams and 25° vtc instead of 50° for the k20a2?
09-14-2007, 09:44 PM
#22
VSA Rocks
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Originally Posted by PrecyseStylez
well from what a couple CRSX people are sayin... the k20a head flows better and the intake cam gear rotates to 50 degrees, the tsx intake cam would have to be modified. The k20a head is a lot better than the tsx head..
09-14-2007, 10:24 PM
#26
Special-K
Thread Starter
Originally Posted by TSX2345
The i-VTECs have the VTC. You have a VTC right now.
09-14-2007, 10:27 PM
#27
Some of the RSX guys are actually trying to sway to the 06+ TSX cams. Hondata has said that they are one of the most aggressive factory cams that
09-14-2007, 10:40 PM
#28
Drives With Hands
Originally Posted by PrecyseStylez
I know i have VTC.. but is VTC conected to the cam gears? Meaning.. if i get this RSX-S head, it should have VTC connected to its cam gears so i dont have to modify my TSX's VTC..right?
09-15-2007, 12:36 AM
#29
10th Gear
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VTC is the cam gear on the intake cam.. replaces a traditional fixed cam gear, with one that moves.. henceforth, advancing intake cam. correct me if i'm wrong, but all i-vtec motors have a vtc gear? this is why a traditional vtec controller doesn't work well.. it cannot adjust the VTC gear. also note that due to our increased stoke, hondata says not to advance it past 45 degrees.. not unless you clay the motor to check for clearance.. which you should do if your building your motor anyways
09-15-2007, 08:51 AM
#31
Driver/Detailer
Originally Posted by 0bLiViOuS
VTC is the cam gear on the intake cam.. replaces a traditional fixed cam gear, with one that moves.. henceforth, advancing intake cam. correct me if i'm wrong, but all i-vtec motors have a vtc gear? this is why a traditional vtec controller doesn't work well.. it cannot adjust the VTC gear. also note that due to our increased stoke, hondata says not to advance it past 45 degrees.. not unless you clay the motor to check for clearance.. which you should do if your building your motor anyways
09-15-2007, 09:17 AM
#32
Racer
Originally Posted by PrecyseStylez
well from what a couple CRSX people are sayin... the k20a head flows better and the intake cam gear rotates to 50 degrees, the tsx intake cam would have to be modified. The k20a head is a lot better than the tsx head..
and as the guys stated, best way would probably be to modify your exsisting vtc to go to 45°. if you use the whole 50° of the k20a2 head you could run into piston to valve clearance issues.
and yes also the tsx has the most agressive intake cam of the bunch so I do believe your actually not gaining anything by swapping to the k20a2 head, only alot of work and expence that could be avoided.
09-15-2007, 05:33 PM
#33
Intermediate
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Its not that easy to make a "jumper" harness like that...And everything doesn't work properly when one is used.Here is what it looks like..It can and has been done, that doesnt mean it WILL be done for the TSX...I heard Hondata won't realease it for th TSX.
A bett solution would be to use the AEM Fi/C setup to tune the car, From what I remeber the issue with the hondata re-flash was the 5psi limit due to the lack of injector pulse width control.?.? That item appears to be a good solution for the TSX.
As for the cams the tsx intake with an 02 rsx exhaust cam would be anice setup for F/I..
A bett solution would be to use the AEM Fi/C setup to tune the car, From what I remeber the issue with the hondata re-flash was the 5psi limit due to the lack of injector pulse width control.?.? That item appears to be a good solution for the TSX.
As for the cams the tsx intake with an 02 rsx exhaust cam would be anice setup for F/I..
09-17-2007, 07:15 AM
#36
Special-K
Thread Starter
Originally Posted by h1coupe
I do believe that one is not better then the other.
and as the guys stated, best way would probably be to modify your exsisting vtc to go to 45°. if you use the whole 50° of the k20a2 head you could run into piston to valve clearance issues.
and yes also the tsx has the most agressive intake cam of the bunch so I do believe your actually not gaining anything by swapping to the k20a2 head, only alot of work and expence that could be avoided.
and as the guys stated, best way would probably be to modify your exsisting vtc to go to 45°. if you use the whole 50° of the k20a2 head you could run into piston to valve clearance issues.
and yes also the tsx has the most agressive intake cam of the bunch so I do believe your actually not gaining anything by swapping to the k20a2 head, only alot of work and expence that could be avoided.
Head Flow
09-17-2007, 09:16 AM
#37
PrecyseStylez, wasn't sure if you had ever seen this but HKS makes stuff that works for the TSX but its outrageously prices.
http://www.jtuned.com/content/templa...d=296&zoneid=1
http://www.jtuned.com/content/templa...d=296&zoneid=1
09-17-2007, 10:58 AM
#38
Special-K
Thread Starter
Originally Posted by rza49311
PrecyseStylez, wasn't sure if you had ever seen this but HKS makes stuff that works for the TSX but its outrageously prices.
http://www.jtuned.com/content/templa...d=296&zoneid=1
http://www.jtuned.com/content/templa...d=296&zoneid=1
09-17-2007, 11:23 AM
#39
09-17-2007, 02:58 PM
#40
Racer
Originally Posted by PrecyseStylez
There was someone who even tested the heads stock for stock and the k20a2 head had a better flow.. especially up top. Here is the write up
Head Flow
Head Flow
the chart there shows that the tsx head has signifficantly better flow up to 5500rpm then it runs out of breath, but I donīt think that matters too much cause you donīt rev the tsx motor that much(8000rpm beeing about the max), so when deciding on this you have to be very specific on what the motor is going to be used for and in what car itīs gonna be.