95 KA24DE ECU Speedo/RPM Adjustment - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AzBrewsky · 08-23-2009, 12:58 PM

Ok.. This is the deal.. My speedometer was screwed up, so I bought a used cluster and installed it. The speedometer worked great and I like the look of the cluster as it was a little different than mine. I am guessing the cluster came out of a newer year..

Old Cluster

New Cluster:

So.. I drove around and first thing I noticed is the tachometer seemed to be showing a lower value than what the engine felt like it was revving at.. So I connected my consult cable and brought up the program and found that I was right. The program showed I was revving at 3000rpm's but the cluster only showed about 2200rpms or so..

Then my attention went to the speedometer.. My laptop doesn't have any batteries, so I took a trip and monitored the mileage on the cluster against the roadside mile markers.. That was off as well. After 50 miles (by the roadside mile markers) my odometer showed 47.62 (i guessed on the .02 addition as the 47.6 had just starting rolling). Which makes for an error of 4.76 miles over 100 mile stretch (doubles the value). This shows my car traveling slower than it actually is. With this information, I can extrapolate my speed as being 4.76% slower. Meaning if my car shows 60mph, I am actually going 62.856mph.

So.. With that in mind, is there a program I can use via the consult cable to make adjustments to the RPM and MPH shown on the newer cluster?

Thanks, and hope I got a good explanation across..

AzBrewsky

projectRDM · 08-23-2009, 08:42 PM

Old cluster is a 95-96, new one is 97-98. I take it you wired the new one in, as the plugs don't match up. I mean, you'd have to. Shit.

So, some of the gauges themselves have small adjustments on them, more like traces you can cut/solder. There's a guide on here about doing this to calibrate for larger tires, I'm not sure if the S14 chassis had this or if was only the S13, but that's a start. The CONSULT software doesn't have any way of calibrating gauges, it's just a monitor and check from what I recall using one.

AzBrewsky · 08-23-2009, 09:05 PM

No re-wiring needed, it had the same connections.. No difference in the harness connectors.. Plug and play..

projectRDM · 08-23-2009, 09:07 PM

Quote:

Originally Posted by AzBrewsky

No re-wiring needed, it had the same connections.. No difference in the harness connectors.. Plug and play..

Not possible then with the two units you show pictures of. The plugs are completely different, and there's one less on the newer model even.

AzBrewsky · 08-23-2009, 09:12 PM

Serious.. Didn't leave any plugs disconnected and everything works.. Signal, high beam indicator, fuel, temp, CEL, battery..

If they didn't have the same connectors spots I wouldn't have installed it..

projectRDM · 08-23-2009, 09:16 PM

Quote:

Originally Posted by AzBrewsky

Serious.. Didn't leave any plugs disconnected and everything works.. Signal, high beam indicator, fuel, temp, CEL, battery..

If they didn't have the same connectors spots I wouldn't have installed it..

You're the first person ever to find a '97-'98 cluster that plugs into a '95-'96 chassis. That's awesome. I'm not arguing, I've just never heard of it, and I've serviced, modded, or salvaged a shit ton of them.

AzBrewsky · 08-23-2009, 09:22 PM

I've had the car since '97.. No mods or anything.. Doing some stuff now. Started with coilovers.. Next is the engine and some new (from a burnt out Altima) rims for $15 (clean as hell)..

08-23-2009, 12:58 PM	#1
AzBrewsky Leaky Injector Join Date: Aug 2009 Location: Chandler, AZ Age: 61 Posts: 62 Trader Rating: (2) Feedback Score: 2 reviews	95 KA24DE ECU Speedo/RPM Adjustment Ok.. This is the deal.. My speedometer was screwed up, so I bought a used cluster and installed it. The speedometer worked great and I like the look of the cluster as it was a little different than mine. I am guessing the cluster came out of a newer year.. Old Cluster New Cluster: So.. I drove around and first thing I noticed is the tachometer seemed to be showing a lower value than what the engine felt like it was revving at.. So I connected my consult cable and brought up the program and found that I was right. The program showed I was revving at 3000rpm's but the cluster only showed about 2200rpms or so.. Then my attention went to the speedometer.. My laptop doesn't have any batteries, so I took a trip and monitored the mileage on the cluster against the roadside mile markers.. That was off as well. After 50 miles (by the roadside mile markers) my odometer showed 47.62 (i guessed on the .02 addition as the 47.6 had just starting rolling). Which makes for an error of 4.76 miles over 100 mile stretch (doubles the value). This shows my car traveling slower than it actually is. With this information, I can extrapolate my speed as being 4.76% slower. Meaning if my car shows 60mph, I am actually going 62.856mph. So.. With that in mind, is there a program I can use via the consult cable to make adjustments to the RPM and MPH shown on the newer cluster? Thanks, and hope I got a good explanation across.. AzBrewsky

08-23-2009, 08:42 PM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Old cluster is a 95-96, new one is 97-98. I take it you wired the new one in, as the plugs don't match up. I mean, you'd have to. Shit. So, some of the gauges themselves have small adjustments on them, more like traces you can cut/solder. There's a guide on here about doing this to calibrate for larger tires, I'm not sure if the S14 chassis had this or if was only the S13, but that's a start. The CONSULT software doesn't have any way of calibrating gauges, it's just a monitor and check from what I recall using one. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

08-23-2009, 09:05 PM	#3
AzBrewsky Leaky Injector Join Date: Aug 2009 Location: Chandler, AZ Age: 61 Posts: 62 Trader Rating: (2) Feedback Score: 2 reviews	No re-wiring needed, it had the same connections.. No difference in the harness connectors.. Plug and play..

08-23-2009, 09:12 PM	#5
AzBrewsky Leaky Injector Join Date: Aug 2009 Location: Chandler, AZ Age: 61 Posts: 62 Trader Rating: (2) Feedback Score: 2 reviews	Serious.. Didn't leave any plugs disconnected and everything works.. Signal, high beam indicator, fuel, temp, CEL, battery.. If they didn't have the same connectors spots I wouldn't have installed it..

08-23-2009, 09:22 PM	#7
AzBrewsky Leaky Injector Join Date: Aug 2009 Location: Chandler, AZ Age: 61 Posts: 62 Trader Rating: (2) Feedback Score: 2 reviews	I've had the car since '97.. No mods or anything.. Doing some stuff now. Started with coilovers.. Next is the engine and some new (from a burnt out Altima) rims for $15 (clean as hell)..