hotrodolds Posted March 23, 2008 Report Share Posted March 23, 2008 I have heard that it is possible to use a Canadian cluster and reprogram the PCM to recognize that, and voila, you have a 180-200mph speedometer. In my case, I end up with a 180mph unit. The question I have is, HOW (via the DHP PT) would you set this up, and equally as important, would the odometer read the mileage equivalent? Thanks. Quote Link to comment Share on other sites More sharing options...
rockfangd Posted March 23, 2008 Report Share Posted March 23, 2008 thats a good question, something tells me that it may not be an accurate reading. i believe it is in the cluster and not in the pcm, i could be wrong though Quote Link to comment Share on other sites More sharing options...
Regal_GS_1989 Posted March 23, 2008 Report Share Posted March 23, 2008 AFAIK, the only difference between the US and Canadian Clusters is the Guage overlay. And well the odometers obviously. Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 23, 2008 Author Report Share Posted March 23, 2008 I was thinking about the odometer reading, and in theory, it should end up reading in miles, no? Since the needle is "lower" on the guage, the odometer wouldn't read as fast, and consequently, it would turn over its numbers slower, too. The real question...what parameters get changed in the PCM to make this work? Quote Link to comment Share on other sites More sharing options...
White93z34 Posted March 23, 2008 Report Share Posted March 23, 2008 I don't think anything is changed, it would be most likely a plug and play install. the needle *should* move at the same rate MPH or KMH alike look at your existing cluster and the small KM numbers go to 180KMH or whatever. the odometer is probably a different sized gear to make the KMS go faster then Miles. Now in theory, if you did the math to figure out at what increase KMS are Versus miles, you could find a resistor that is close to that to cut your VSS signal to the cluster down so the needle would move slower on a metric cluster and produce the KMS to read MPH. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted March 23, 2008 Report Share Posted March 23, 2008 what??? what year and car? all the mph clusters I can think of in CS's already go to 115 mph... and have cutoffs between 109 and 119. are you planning on going faster? Or do you intend to make your car look like a 1965 chysler Newport with it's 200mph speedo and a top out speed of like 85 mph????? Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 23, 2008 Author Report Share Posted March 23, 2008 Yes, the MPH clusters in Cutty's go to 115. This is in my '97. The car will do 150mph now. It would just be nice to have a speedo that could read to that, instead of wrapping around down to the middle of the odometer. Quote Link to comment Share on other sites More sharing options...
jeremy Posted March 23, 2008 Report Share Posted March 23, 2008 The car will do 150mph now. Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 24, 2008 Author Report Share Posted March 24, 2008 Lemme see if I can dig up the 147mph scan...then again, you probably have NO clue what the car is...do you? Now, back on topic. Quote Link to comment Share on other sites More sharing options...
jeremy Posted March 24, 2008 Report Share Posted March 24, 2008 Lemme see if I can dig up the 147mph scan...then again, you probably have NO clue what the car is...do you? Now, back on topic. well seeing that this is in the w-body section I am going to assume it is a '97 w-body of some kind, and you mentioned a cutty's cluster goes to 115....so with those two pieces of info, I gathered this is a '97 cutty which should be a 3100 unless swapped which is why I posted the pic I did...I'd still like to see and in car video with GPS showing actual speed to show 150 Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 24, 2008 Author Report Share Posted March 24, 2008 There is no pic or video...was in the car alone. I'm working on digging up the scan now. It's a L67 powered car, with mild mods. Quote Link to comment Share on other sites More sharing options...
ismellrealbad Posted March 24, 2008 Report Share Posted March 24, 2008 A lightly modded L67 will go 150. I know this because I did it a couple times. And thanks to my HUD I was able to see for sure after the speedo stopped. Quote Link to comment Share on other sites More sharing options...
jeremy Posted March 24, 2008 Report Share Posted March 24, 2008 It's a L67 powered car, with mild mods. that makes a big difference from the 3100 Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 24, 2008 Author Report Share Posted March 24, 2008 Yeah, I've been up there twice. I've got the laptop along to verify speed. I don't have GPS. Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 24, 2008 Author Report Share Posted March 24, 2008 It's a L67 powered car, with mild mods. that makes a big difference from the 3100 Yes, yes it does. I barely got a 3100 powered Lumina to 120! Quote Link to comment Share on other sites More sharing options...
rockfangd Posted March 24, 2008 Report Share Posted March 24, 2008 thats what i love about my hud and UB3 it is accurate all the way. the fastest i have gone is 106 and it was smooth all the way Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 24, 2008 Author Report Share Posted March 24, 2008 Yeah, I'm content in the 135-140 range. It gets a little dicey above 140. I want STB's, and a bigger rear swaybar, then, we'll see if it gets better. So...is the general consensus on this, that I could just pop this thing in, and call it good? Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted March 24, 2008 Report Share Posted March 24, 2008 Aside from the fact that there's little good reason to ever take any W-body up over 100 MPH, putting a metric speedometer in the car will do nothing but just that.. add a metric speedometer. You would need to somehow modify how many PPM that the VSS is sending to the PCM. Quote Link to comment Share on other sites More sharing options...
jeremy Posted March 24, 2008 Report Share Posted March 24, 2008 Yeah, I'm content in the 135-140 range. It gets a little dicey above 140. I want STB's, and a bigger rear swaybar, then, we'll see if it gets better. So...is the general consensus on this, that I could just pop this thing in, and call it good? your best bet would be to install a HUD Quote Link to comment Share on other sites More sharing options...
hotrodolds Posted March 24, 2008 Author Report Share Posted March 24, 2008 I want one so bad. This interior never came with one, so that makes it really tough, because I'm NOT good with fiberglass, bondo, or anything of the sort. Quote Link to comment Share on other sites More sharing options...
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