JR tuning questions/ideas

[exciv2000]

My current setup consists of the JR FPR, JR Map controller, J&S UltraSafeguard with Dual monitor, and a V-AFC (among many other things). These four things sort of compliment each other. I may have the map controller and V-AFC wired up wrong, but that's something I'll have to dig into later.

The J&S Dual monitor is unique in that it has a cruise and power mode. Under 'power', it only reads the A/F ratio between 11.0:1 and 13.5:1. I'd like to get my A/F as close to 13.0:1 as possible, so I've been leaning it out via the V-AFC...this might be working, but my butt dyno can't tell shit, and the dual monitor still reads 11.0:1 or richer. I know I need to get this thing on the dyno again with a wideband o2 sensor, just haven't had the time or the cash lately. The JR map controller runs the car pig rich all over the RPM band, and well you know about the 5:1 rise rate of the JR FPR. One nice thing about the JR FPR is I can put my timing back up to stock. And let me just tell you I'm not interested in a standalone at all.

So my thought is what If I get a cartech FMU, forgo the JR FPR, and the JR map controller. I would be able to tune the car a lot better then by lowering the rise rate to a respectable 3.5:1 to 4:1, dyno tuned of course. That, and I would still eliminate tip-in det with the cartech by adjusting the fuel pressure bump to begin at 0 vac/boost. But, would I still be able to run stock timing?

Any thoughts or ideas would be appreciated.
Thanks!
Scott

[Brian]

Ever thought of running the VAFC hack??? Acts kind of like a standalone then. I honestly think taking off the map controller is a recipe for a blown motor.

[exciv2000]

what exactly does the V-AFC hack consist of? Did a search but did not find on google.
Well the cartech is very well made, and comes suggested by the likes of Texan, Tuan, peyomp, and Jim Helbing, + others. The map controller just runs the car way to rich to make really great power. I think if you had played with your fuel more with a cartech in your SI, you could maybe squeak out a mid 13 second pass (optimistic I'm sure, but I'm sure it could be done too!)

[exciv2000]

Well, add your two cents about the V-AFC hack, but fyi I just messaged Bill Winters aka 5 liter eater on ClubSI about it too.

[Brian]

There is no way fuel tuning would have cut a second and a half off my SI's times. Maybe a mid 14 with great tuning, but that's about all it had left in it. I agree that the map controller runs the car too rich too. If you haven't already do a search on CSI about teh v-afc hack. They have a few people running it on jrsc'd cars.

[2000SiVTEC]

I am sorry, but without a standalone on our Si's they would have never seen a 13 second pas let alone a mid 13 second pass. If I were you I would not take off the map controller unless you are going to use the hack or a standalone.

[12seccivy]

what exactly IS the hack?
i've never heard of it, but i'd like to learn more about it.
as far as Scotts car goes, you have so many little things going on
inside that little ecu of yours. it seems impossible to know what kind of effect each little change makes ,unless you run the thing on a dyno..

[CSMsi311]

I have nothing on my car that I can use to tune it.

I only want/need 2 things to happen with my engine.
1.) Quit bogging down when the a/c is on.(pisses me off)
2.) Make the top end feel a little stronger. Right now it feels like in vtec there isn't any increase in power. Also, my car feels faster at say 80% throttle than WOT.

I'm not too interested in pushing the limits of my car. That'll come after graduation.

What would everyone recommend? J&S, AEM, EBL, .....?
What ever happened to the EBL evo?

[TedR719]

Sell all that crap and get a Hondata :D

I would search on honda-tech.com for info or post there for the vafc hack.

[exciv2000]

Originally posted by futuresi
Sell all that crap and get a Hondata :D


This is what I said before:
Originally posted by exciv2000
And let me just tell you I'm not interested in a standalone at all.

And just to let you know, none of it is crap. They all have a function and they do it well. Even so, not one standalone can even come close to matching what the J&S ultraSafeguard does for me as far as detonation detection and timing changes. I don't want the tuning nightmares of a standalone, nor do I want to spend the time or the money on them.

I'm going to play around with the car today. If anyone is interested in buying a JR Map controller used for about 6 months, let me know, as I might be selling mine.

[w00dr0w]

Under 'power', it only reads the A/F ratio between 11.0:1 and 13.5:1. I'd like to get my A/F as close to 13.0:1 as possible, so I've been leaning it out via the V-AFC...this might be working, but my butt dyno can't tell shit, and the dual monitor still reads 11.0:1 or richer. I know I need to get this thing on the dyno again with a wideband o2 sensor, just haven't had the time or the cash lately. The JR map controller runs the car pig rich all over the RPM band, and well you know about the 5:1 rise rate of the JR FPR. One nice thing about the JR FPR is I can put my timing back up to stock. And let me just tell you I'm not interested in a standalone at all.

So my thought is what If I get a cartech FMU, forgo the JR FPR, and the JR map controller. I would be able to tune the car a lot better then by lowering the rise rate to a respectable 3.5:1 to 4:1, dyno tuned of course. That, and I would still eliminate tip-in det with the cartech by adjusting the fuel pressure bump to begin at 0 vac/boost. But, would I still be able to run stock timing?

Any thoughts or ideas would be appreciated.
Thanks!
Scott [/B][/QUOTE]

I bet this is what it sounds like when I talk to people about computers. I have no clue what any of this means! I need to learn this stuff!! :confused:

[2000SiVTEC]

to tell you the truth the AEM was capable of sensing knock like the ultra safe guard. I will tell you that none of those piggy backs are ever going to come close to giving you the "factory boost feel" on your honda. Ricos car with the hondata was so smooth it was crazy. if you want real power get a standalone if not you will probably have to settle for less it is just the simple truth.........oh adn if I were you I owuldnt get rid of that map without teh hack. I dont care if you are getting another FMU it will most likely not take care of tip in....

[exciv2000]

actually, that's just the thing, it totally takes care of tip in. You can adjust when the fuel gets bumped up in PSI while it's still in vacuum.

Also, I can understand a standalone being able to detect knock, but does it retard the timing in all cylinders or per cylinder? Also, I'm not so sure it has the ability to visually show you which cylinder is knocking and how much timing it is pulling in just that cylinder.

[TedR719]

Take it to a dyno. You got to drop some dollars for tuning if you want the car at it's best. Not many people I see do this and guess all day on what they should do. You have a pretty nice set up right now. I think you would have been better of with a Hondata for almost the same price IMO, but we wont go there :)

Anyways I'm sure you can squeeze alot more horses by accually going to get dyno tuned.

[exciv2000]

I plan on dyno tuning it. Last time I took it to paragon when I just got it put on by them, and this time I think I might take it to Bear, provided he knows how to tune a V-AFC and has wideband o2 sensor.