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Discussion Starter · #1 · (Edited)
IMPORTANT NOTE :

I revised this post because it originally had questions trying to figure out how to get KPRO and the Engine harness to put a Reverse Lockout function onto a 5-Speed PND ECU for a 5-Speed Tranny.

BUT . . .

The following info ONLY applies to using a 5-Speed ECU for a 6-Speed Tranny.

A 5-Speed Tranny RSX does NOT come with a physical reverse lockout, because the chances of a mis-shift are very small .

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Auto-to-Manual Swap - VTEC Academy

About those six-speed transmissions; those mean extra wiring. There’s a reverse lockout solenoid that must be wired into place. Without it, finding fifth and sixth gears on the fly can be difficult. Installing a stock, six-speed ECU will control the reverse gear lockout, but won’t work with base-model engines. If you’re swapping the engine, too, you’re good to go. If future engine mods are in the works, then consider Hondata’s K-Pro, something from AEM, or a K-Tuner ECU. They can also be wired to control the lockout. If you’re using a five-speed ECU, don’t despair; you can get the lockout to work in a couple of different ways.
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https://www.hondata.com/downloads/k-pro_install_form.pdf

The form states , " no reverse lockout " .
Technical Information RSX ECU Reference

The footnote #1 states , " If this [ PND ] ECU is used with a 6 speed transmission, reverse lockout will not work".
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Hondata K-Pro and reflash FAQ/Tuning resources

The ECUs for all US market RSX base (manual shift only), RSX Type-S and Civic Si are interchangeable as long as they have been modified to K-Pro status and loaded with the proper calibrations. According to Hondata, there are some minor differences: "The PRB (RSX -S) has reverse lockout for the 6 speed. The others do not. The PND (RSX Base Manual) has intake runner control. The PPA (CRV Manual) has . . .
Hondata K-Pro and reflash FAQ/Tuning resources

Type S ECU and Base 5 speed ECU is similair except Type S has a reverse lockout for the 6th gear which the base won't need.
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ABOUT THE ENGINE HARNESS :

NOTE :
I recall a comment from @automaticRSX when he said . . .

Can Type-S parts be used on Base model RSX for Auto to...

. . .you can retask the dual intake runner control for the base intake manifold and use that for reverse lock out. It's literally the same plug as reverse lock out. You're not going to reuse the base intake manifold when you swap to a k24a2 anyways so use that plug for reverse lock out. People keep thinking you need the type s ecu for reverse lock out but you don't. If you want a 5 speed get the ep3 civic si.
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To corroborate that, I also saw two videos by VTEC Academy at . . .

https://youtu.be/zoQvSWDPuRs?t=164

and at . . .

https://youtu.be/5QMiEdARcvA?t=40

Where they state that you can use " Injector " section of a BASE model Engine Harness to add the " reverse lockout ". The connector that is there is usually used for controlling the Intake manifold runners. Coincidentally, this can be RE-purposed and RE-located for connecting to the " Reverse Lockout " solenoid

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It does not seem as if VTEC Academy ever wrote the "3 ways" to use the reverse lockout function on a PND ( non-Type S ECU ). If someone knows where it is or how to, let me know.

But in the comment section at https://youtu.be/5QMiEdARcvA?t=302

VTEC Academy said ,
" With a Hondata you can use one of the alternative outputs you might use for Nitrous control to turn that reverse lock out on and off. " He also said to, " Splice the black yellow wire from the connector into any black yellow wire in the engine harness".
And Brandon Bruce said,
"With a PND ECU with KPro V4, using a PRB calibration, you would pin the reverse lockout to B22 and it will automatically work, just like a PRB ECU. "Changed PRB calibration to activate reverse lock out via pin B22 (secondary intake runner). This allows PND ECUs to be used rather than the PRB ECU." KManager V4.0.7 - Hondata

KManager V4.0.2 -
  • Changed PRB calibration to activate reverse lock out via pin B22 (secondary intake runner). This allows PND ECUs to be used rather than the PRB ECU.

Hope this helps somebody .


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Well as many here know, I am on the path to get my '03 Base RSX swapped from an Auto to a Manual.

All that is left to get is the Clutch & Flywheel, KPRO and the Transmission.

Conversion bracket is on the way.

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Going to go with a 5-Speed Tranny. According to VTEC Academy, swapping to a 5-Speed is less headache.

Auto-to-Manual Swap - VTEC Academy



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So then I went to Hondata . . .

AT . . . https://www.hondata.com/downloads/k-pro_install_form.pdf



BUT AT . . . Technical Information RSX ECU Reference



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Then I saw a post on Club RSX . . .

Hondata K-Pro and reflash FAQ/Tuning resources



Hondata K-Pro and reflash FAQ/Tuning resources



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NOTE : I am using 5-Speed Manual ECU from a 2003 Acura RSX ( Base Model)

ECU # 37820-PND-A07
VIN # JH4DC53833S800760

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QUESTIONS ABOUT THE REVERSE LOCKOUT :


Q1) - Since I am using a 5-Speed PND ECU / Transmission , will I have the "reverse lockout" function ?

Just want to confirm if I will or not ?

And IF not, is there a way to get the " reverse lockout " ?

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Q2) - IF not, then is not having a " reverse lockout " for a 5-Speed a big deal or not as far as me probably blowing my motor while down shifting ? To quote someone else , " u never know what will happen when your driving. I might sneeze and shift into reverse while on the freeway ". :confused:

What is the likelihood of going into reverse on a 5-Speed by accident ?

* Keep in mind that I am installing Hybrid Racing detent & shifter springs and K-Tuned trans cable bushings . So that can I have more exact control of the shifter by it being more "notchy" during shifts.


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QUESTIONS ABOUT THE ENGINE HARNESS :

NOTE :
I recall a comment from @automaticRSX when he said . . .

Can Type-S parts be used on Base model RSX for Auto to...



-----

To corroborate that, I also saw two videos by VTEC Academy at . . .

https://youtu.be/zoQvSWDPuRs?t=164

and at . . .

https://youtu.be/5QMiEdARcvA?t=40

Where they state that you can use " Injector " section of a BASE model Engine Harness to add the " reverse lockout ". The connector that is there is usually used for controlling the Intake manifold runners. Coincidentally, this can be RE-purposed and RE-located for connecting to the " Reverse Lockout " solenoid

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Q1) - Would it be easier to just buy an '02 - '04 RSX Base M/T " Engine Room Harness " ( PN: 32200-S6M-A00 ) from a salvage yard, as opposed to modifying my 2003 Base Auto Engine Harness ( IE - for the Auto to a Manual swap, and also concerning the reverse lockout ) ?

Or would this be pretty simple task for the performance shop to do ?

Q2) - Since I will have a 5-Speed tranny, is performing this " reverse lockout " modification even neccessary ?

Q3) - Since I am temporarliy keeping my K20A3 for now, would I even be able to perform this " reverse lockout " modification to the engine room harness?

Q4) - Since I am using a 37820-PND-A07 M/T 5-Speed ECU, would I even be able to perform this " reverse lockout " function ?

Q5) - It does not seem as if VTEC Academy ever wrote the "3 ways" to use the reverse lockout function on a PND ( non-Type S ECU ). If someone knows where it is or how to, let me know.

But in the comment section at https://youtu.be/5QMiEdARcvA?t=302

VTEC Academy said ,

And Brandon Bruce said,

Q6) - Ultimately, is not having a " reverse lockout " on a 5-Speed something to worry about, even if I am using detent springs, shifter springs and K-Tuned trans cable bushings ? With these I should have more exact control of the shifter by it being more "notchy" during shifts.

In other words what are my chances of going into reverse on a downshift by mistake with a 5-Speed ?

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Getting real close to my goal and my dream here, so any input would be appreciated.

Thanks in advance.


. . .
Dude thanks for sharing all of this. You are in fact a good programmer and it can be shown by your work
 

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Discussion Starter · #3 · (Edited)

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Discussion Starter · #4 · (Edited)
Well got the answer . . .

Both Hondata and Hasport replied and clarified their posts / tutorials.

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Turns out a 5-Speed tranny does not PHYSICALLY even come with a Reverse Lockout from the factory.

The 5-Speeds do not come with it at all because the chances of mis-shifting with a 5-speed is not likely at all .

End of story.

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Hope this helps.

You're welcome.

And feel free to use the prior REVISED posted info if your trying to use a
5-Speed PND ECU on a 6-Speed Transmission.



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