4:10 and speedometer correction
 

Ok, so you guys have these speedometer recalibration jobbers for when you put new gears in yer car.
Problem is, they speficically say they are for 96-98 auto and 99-04 manual.
well. i got a 99-04 GT Auto. I dont see any that claim to work for a 99-04 auto. Whats the score here?

What do YOU guys sell that will get the speedometer back on track?

Can you say SCT Excal Tuner.

I can... the best ( after years of using preds)

Well thats pretty much what i was wondering. The speedometer kit is like, 100. The tuners all sit around 400. Obviously 100 is cheaper.
Then again, 400 will get it fixed plus add a few more ponys under the hood.

Well, it seems fairly obvious. I just need to get a tuner.

Is the SCT really that much better than diablo?

Yes it is.

Does anybody know the HP and Tq increase on the Dyno with the SCT on a non-added 4.6v8?

That depends where you live? My son is in Florida and he tells me that people swear by Diablo/Predator systems down there, You get on modulardepot forums and they swear by SCT up here in Colorado mostly everyone uses the Diablo/Pedator :confused:

i only gained about 5RWHP and 5RWTQ with the SCT tuner with a decent amount of exhaust work. BUT what it will help out a lot is it will firm up your shift points since u have an auto. i wasnt too picky about picking up more power, i wanted my shift points changed, and yes, SCT is a good way to go.

I truly believe if your gonna spend that much on a tuner! You might as well just get a dyno tune that can allow you to check and adjust A/F ratio, make speedometer adjustments, CEL light, etc; You will definetly extract the most power out of your car that way! handheld tuners are a great tool especially in the case of the Xcalibrator2 but most are very conservative. IMO

Only problem i see with thart is im sure it would void the **** outta my warranty, however, if i use a tuner i can set it back to stock before taking it in...

I have noticed what yer saying about the tuners too, im in colorado and everyone talks about diablo, i dont know anyone here with experience with SCT.

5rwhp????? thats it??????
Doesent the diablo boast 17-20hp dyno'd??

There was this shop in Denver that use to sell Superchips thats where i got mine but they no longer sell or update the product :mad: Not sure what part of Colorado you in but check out MILE HI DYNO talk to Scott or Joe #303-783-DYNO they do some good work and can give you some good recomendations, He got 19rwhp and 18rwtq out of my buddies 99 Cobra with Catback exhaust, CAI, pullies and Gears while your there check out Scott's wicked 03 Cobra ;)

Will

Thanks for the info. Actually, im about a 10 minuit drive from there. <rofl>
I'll have to check that out.

I did a dyno pull with all my mods and pulled at 235RWHP. After he played with the A/F and some other things it jumped to 240RWHP. Both runs were on 93octane. like i said, i was looking to firm up my shifts, any extra HP was a bonus. Slappy, I would use what ever tuner is popular in your area, that is what the guys with the dyno are used to using and have experience.

You do realize that in order to get good gains in HP your timing has to be bumped up and you have to have a higher octane tune. 87/89 Octane does almost nothing for HP gains.

Heres your chart of stock HP gain.

http://www.sctflash.com/car_chart.php

You mean i might actually have to spend an extra 3 dollars when filling my tank going from 87 to 91 oc? (no 93 in mile high)<rofl> Ohhh... dunno if i can afford all that. <grin> acutally i used 91 oc ever since i bought the car, just started using 87 oc recently.

Im thinking about ordering the tuner any day now, but i wanna call that mile high dyno place and talk with them about it.

now i gotta find a decent place to get 4:10's installed. they have been sitting around far too long, im ready to get this started.

Problem is i cant even get my car out of the neighborhood right now, snow all packed down on the streets.

You can do it....ORDER! ORDER!ORDER! All i run is 93, nothing less....If you had a manual I would sell you my SpeedCal for cheap..