I know moving the VTEC point was not benifishial to the NA guys, but did Rodney make any videos or logs of the turbo with a lowered VTEC. The SC seemed to like 4k VTEC and I'm sure the turbo would too.

The thing I am struggling to understand is why the injectors don't shut off when I let off the gas. With the stock ECU and Fic, the injectors would shut off and my AFR gauge would go to 22's any time I let off the gas. With the J&R ECU the AFR gauge reads 13's coasting down a hill or other times when I'm off the gas. It's not effecting drivability, I am just use to seeing the injectors shut off while coasting.

 

Your VE table is off (needs to be better scaled). Specifically, fuel needs pulled during no throttle input and the intervals needs to be closer together on the rows

 

OT, but did anyone elses trip computer (miles til empty) feature become WAY off after hooking up the JnR?

mine did. i even did back to back tests to confirm it.

 

Yes, especially if you have larger injectors. The trip computer is going off of injector pulse width, and depending on how you're configured with both tune and injectors can go to an unrealistically high MPG or very low MPG.

 

^makes complete sense. thanks

btw andy i tried to call you a few days ago, did your number change?

 

You didnt call, you texted I believe. I received a Baltimore text, no? Per a previous post, I cant do texting anymore. Too time consuming

 

darn it....Andy beat me to it....

I think it was HI SPEED who posted a pic of getting 44MPG over 500 some miles and i was like .....he explained the MID calculated using duty cycle of the fuel injectors....hence the trip computer is tricked...

 

i did both. the person on the other end (i guess it was you ) said 'nope lol who is this'? when i asked if this was andy and still your number.



i'll try calling again tho.

 

330-532-8896

 

For me it was the RDX injectors that messed up my trip computer. The car thinks it's sipping gas because it's using so little of the injectors potential. The car is actualy using fuel like it's going out of style, for me atleast.

Is there any easy way to tell if my wideband is attached to the ms3, without tracing the pink wire? I replaced the innovate o2 sensor the other day and didn't see it spliced in. I figured it was done closer to the ms3, but didn't have a lot of patience after all the ECU issues I had during install and forgot to ask if they got it hooked up.

 

Without hooking up a laptop with tunerstudio loaded or having previously set up "SD Card Auto Datalogging" with firmware 1.1 it is doubtful. You'll need to use either of those methods to see if it's picking up the signal

 

This is true. A reverse double-throw double-pole relay (or something to that effect) would do the trick. McMaster

I never went to the trouble to try the relay because lowering the vtec point wasn't that important to me. It was more just a casual experiment.

Thanks for pointing out about the relay although KN.


Every since my car was brand new, I have always paid close attention to the feel of vtec engaging..... "VTEC just kicked in Yo"

Through out the following years of doing various mods to my car, I have noticed that different mods would change the feel of vtec engaging. Variables such as throttle position (ATP) during engagement, air filters, exhaust back-pressure, power-to-weight ratio (TL Diet), PCD-vs-cats have altered the feel of the vtec engagement for me.

I emphasize "the feel of vtec engaging" because this is indicating if vtec is engaging too soon or too late. For example, it you feel nothing when vtec engaged, this indicates an ideal engaging point. If you feel a dip in the pull, this would indicate vtec engaging too soon. If you feel an increase in the pull as vtec engages, this indicates that vtec is engaging too late.

Therefore, based on my experiences and observations through the years, I think that it is improper for someone to make a blanket statement that "the TL" performs better with a higher engagement point. For example, a person with F/I might do better with a higher vtec point..... a person with no back pressure and N/A might do better with a lower vtec point...... a person with PCD and N/A might do better with a lower vtec point..... the oem TL *does* have an ideal vtec point.

For me with my particular set-up (combo of mods including Diet), my mods have *always* caused the vtec to engage with a huge increase in pull. To me, this is indicating that there is power "being left on the table" with the vtec engaging to late. That is, I would benefit from having the vtec occur at a lower rpm than oem.

Just a small side note - I have come to love a huge increase in pull as my vtec engages... just for the psychological effect of feeling that kick-in-the-butt. With my current set-up, the vtec is most dramatic with about half throttle. When vtec engages with about half throttle, it feels like a small nitrous shot when vtec engages. It can easily be heard in the exhaust note also.

 

Question about the vtec pressure switch circuit.

With vtec off, VTPSW see's ground?
With vtec on, VTPSW is floating?

Because there are only two wires going to the switch, Doesn't that mean it's a SPST. And I think it's NC?

 

An update on my harness:

Rodney told me he it was going to ship on 7/26, and it finally shipped on 8/7. I received my harness yesterday (8/10), excited as can be, I went home and tore everything out to install when I get a call from Rodney as the exhaust shop is welding in my bung for the wideband. First thing he says when I answer the phone is, "Please don't install that harness"... WHAT??? He told me that he sent me an 04 harness and you can tell because there's an extra connector on an 08. I compared it to my stock ecu, and there are 5 connectors just like the one i received. I called him back and he explained that the injectors are supposed to be on connector "A" on an 07/08, and on an 04, like the one I received, the injectors (cut wires close to the connector) are cut off on connector "E". I asked him to have the "other customer" call me, and I would ship him his, and he could ship me mine, and he told me that he didn't want me to have to spend any money... Supposedly, Rodney already printed two shipping labels, and is going to send these to the guy with my harness, and I am going to ship him his with the pre-paid label... With everything else that has happened, I struggle to believe this is really what's going on, and that he didn't just send me an 04 to shut me up... My car is all tore apart now waiting on Rodney, AGAIN!!

So, if the "other customer" that received my harness is on this thread, please get with me. I am willing to pay to ship to not have my car tore apart for another month waiting on Rodney.

 

^ lol apparently mine was suppose to be shipped 3 weeks ago. now he said he will ship it out and have my tracking number by monday. im clueless and dont really give two shits about his product anymore.

 

I have been paying attention to this lately and have noticed that yes the MPG's are off BUT the fuel range may be correct in fact more accurate then when OEM is plugged in versus JnR....I have yet to fully confirm but i will very soon and this is for my set-up N/A with stock injectors at least so here is what I have discovered so far

with OEM ECU only: (factual)

when reserve light kicks on and I watch the fuel range and let it get down to 0 miles the needle is still above E mark and slightly above the Red lower mark on fuel gauge.....when I fill my tank I can top off completely and it fills only 14.5-15 gallons....so if the TL has a fuel tank size of 17.1gallons it means even with 0 miles reading it still has 2gallons in tank give or tank before you actually run out of fuel. To me it seems like Acura made a safety margin so in case people want to push to 0 miles everytime, they still have some fuel in tank.....(makes sense to me)

Now with JnR ECU plugged in:

I first saw range reading like 475miles Range and whatnot give or take

At first I am like wow never seen this range till empty and then when reserve light first comes on it shows still like 96miles for example til empty

so if in fact we have 3gallons or so when light comes on and lets say I am avg'ing 32mpg, then it means it is going by the full 17.1 mark as a number to getting how much you have not till you hit 2gallons left in tank as a range, but you have that many amount of miles till you actually go empty as in SOL ........

With JnR ecu I have let the range come down to as close as 34 something miles and the fuel gauge needle has dipped well under the red mark on empty and going past E letter.....When I go to fill my tank I still get a full fill of only 14.9-15.1 gallons soI have roughly 2gallons in there.....So what I am doing lately is letting it creep lower and lower in the range mark with JnR ECU plugged in and seeing how much I fill at the pump......

When I can get to a little under 1 gallon of fuel or fill up the TL with roughly 16sumthing gallons and notice what the Range reads I am hoping it will be close to what I actually had left till it used all 17 gallons.....

Eventually I think I will purchase a small 2gallon fuel bottle and keep in my trunk and actually let my range get to 0 with the JnR ECU plugged in

one or two things will happen 1) I run out of fuel before the Range gets to 0 or 2) I get close to 0 like 1-2 mile and fill up and then see how close it go to completely being empty!!!

If in fact it is accurate to the 17.1gallon and have no buffer this could be Epic for me at least cuz i always like to know exactly how much is left in tank!

Hope this has not confused no one...I will update as I further investigate the range accuracy with the JnR ECU plugged in

 

Tim, I will def not question your finding...the only thing i will say is the videos posted by me (Rodney's Vids) are on NA cars with mods....since the weight loss doesnt factor on the dyno, he felt the vtec kicking in was kicking in harder at 5000 rpm....

the other day i did see something rather odd...50% throttle, 2nd gear, 100deg weather....i was spinning at 4700 rpm....the minute vtec kicked in.....will send you a video....

 

It seems as though bmeyer is the only one who is controlling vtec with the MS3 in this community.

The factory ECU can be fooled by using a SPDT or DPDT (later available at Radio Shack) relay. Just need to wire the vtec solenoid to the the relay coil and the vtec switch to the NC side of the contacts. Both terminate at a signal ground.

Then the vtec solenoid itself just goes to a spare output and then mapped to turn on at a desired RPM.

 

hey guys i've listed my ECU/LC1/Knock/Pod on the black market section of the forum. I'm selling everything for close to $300 off retail pricing as a package deal. Everything is brand new, with the exception of the ECU. Everything you need is right here in one fell swoop. Any questions, feel free to PM me.

https://acurazine.com/forums/car-parts-sale-361/j-r-programmable-ecu-04-08-acura-tl-lc1-afr-gauge-knock-monitor-s2k-pod-package-deal-865742/

 

^^^ another one bites dust....GLWS Aaron....

 

So your setup is working i presume??? If so, excellent!

 

I will let you know tonight.

 

 

Tuning a supercharged engine is similar to a larger NA engine. Depending on turbo sizes and turbo manifold set-sup, vtec point will vary. With high backpressure you should retard cam angles and raise the VTEC point, with low back pressure the opposite.

With the sense in raising the vtec, is this beneificial only to stock, lightly modded, or full bolt-ons? I think I saw a while back that this was tested on a lightly or stock TL.

 

i have a relay connected to the ms3 to alter the vtec point as well...i didnt do the wiring but if you need something related to it, i can take a pic of the wiring

 

Do you have one or two relays? If there is only one, do you throw a cel?

I am curious why we have two of the generic PWM's enabled. I was initially thinking that VVT should be set but it's beyond what our engines are capable of using.

 

one relay and yes i have the rocker arm cel.


no idea <----still learning

 

say whut?

 

^At this point, the only thing implemented is being able to engage vtec based on MAP and RPM.

VVT is for those who can adjust cam angles. We can't do that.

I saw Nitrous2 and VVT PWM's enabled on other tune files, mine has InjG and VVT enabled. I verified that both Nitrous2 and InjG are both unconnected so I am pretty sure just the VVT PWM is doing anything.

 

^^^

you speaketh any english? damn Kurt, your knowledge lake is HUGE !!! there is a lot of reading to be done on my part....i dont know what VVT's and PWM's are....and what is InjG....got any links i can learn about them from ?

 

VVT (Valve Variable timing).....PWM assuming is Pulse Width Modulation and InjG (Injector spray time maybe) first things that come to my mind

 

The various outputs can be configured at PWM (Pulse Width Modulated) outputs or connected to special features like Nitrous and vtec.

For example, the WMI fast valve runs on a given frequency. You can use a PWM to control that valve for WMI, select the type as frequency and it gives you a place to select the frequency. Or in the case of vtec, it's binary, on or off.

The other setting of the PWM is the map. The x-axis is seems to be fixed to RPM but the y-axis can be MAP, CLT, TPS and a couple other selections.

It's all on the ms3efi.com site.


That's right. InjG is the 7th one and can be used for other functions since we only need 6. Some can be used elsewhere, some can't. They were cleaver in keeping it as flexible as possible.

 

Thanks Boston and KN :thubmsup:

i really appreciate you guys helping a noob out rather than asking me to search

 

^^Please take some pics of all wiring mods necessary libert. Thanks

 

Here is my version of the harness. I used the power coming from IG1 which is already used for the MS3 and KnockSense unit to power the relay and vtec solenoid.

The PWM circuit is a "ground to" type and I used the same fuse on the relay coil and solenoid.

I am beat so I'll be installing it in the morning.

 

^^ Cool deal. Good luck and let us know how it goes

 

Sounds like there are enough people in this thread to tweak and really make this whole thing work!

 

Give it next year to really see results from a couple different angles on a couple members here. Trial and errors will be 2 yrs max just like most R&D companies

 

Very true...where there's a will, there's a way, right!?!?

 

great work KN...any updates