4.10 question - 2003-04 Mach 1 Registry Owners Club

playtime_04 · 11-29-2005, 11:42 PM

Im looking into getting the 4.10's for the mach and i didnt know if after i installed the gears if the 4.10's would mess up the speedomiter, cause i thought i heard it did mix up the speeds.....if this is true how do i fix it or what do i need to buy?

Bart · 11-29-2005, 11:51 PM

SpeedCal from Dallas Mustang or get the computer flashed. I used the Speedcal and it has worked fine. 4.10s are a great addition to the Mach.

2k4mach · 11-30-2005, 12:01 AM

either a speedcal or a chip/ flash tuner.
i had a speedcal in the car before i got it tuned so i had the gears left alone in the tune and just corrected with my speedcal

blown03Mach1 · 11-30-2005, 12:17 AM

If you have a Diablo Predator you can reprogram your computer for the 4.10's. Trust me you'll love the 4.10's in your Mach. Some say kills highway mileage, but I am only pulling around 23-2400rpm at 70 with the 4.10's. In city I am still averageing around 17mpg and that was with a hot tune.

It has been said before, don't fear the gear!

3150Mach1 · 11-30-2005, 12:44 AM

Agree with what everyone has said. If you are an automatic then 4,10 gear. If a 5 speed you could concider 4.30. I an auto and the 4.10 is great. I would invest in the flash tuner. But first check your local shops to see what they work with. That will determine if yopu get a Diablo Predator or a SCT XcalII. I seen both forsale used on here and on ebay.

The preformance tunes alone will add double digit HP and you can play with alot of other stuff. You will need it down the road as you increase the mods to the engine.

11-29-2005, 11:42 PM	#1
playtime_04 Guest Join Date: Feb 2005 Posts: 362	4.10 question Im looking into getting the 4.10's for the mach and i didnt know if after i installed the gears if the 4.10's would mess up the speedomiter, cause i thought i heard it did mix up the speeds.....if this is true how do i fix it or what do i need to buy?

11-29-2005, 11:51 PM	#2
Bart Guest Join Date: Aug 2002 Location: Spokane, WA Posts: 642	Re: 4.10 question SpeedCal from Dallas Mustang or get the computer flashed. I used the Speedcal and it has worked fine. 4.10s are a great addition to the Mach.

11-30-2005, 12:01 AM	#3
2k4mach LuLz Join Date: Dec 2003 Location: Cedar Park, TX Posts: 19,294	Re: 4.10 question either a speedcal or a chip/ flash tuner. i had a speedcal in the car before i got it tuned so i had the gears left alone in the tune and just corrected with my speedcal __________________ 11 Sterling gray GT500 coupe 08 Silver Z06 1058rwhp/1073rwt @ 15psi 14 Silver Q50S Vortech blown 04 DSG Mach 1 (stolen) 03 OW Mach 1 (sitting in a field rotting away)

11-30-2005, 12:17 AM	#4
blown03Mach1 8LB YNER Join Date: Mar 2005 Location: Tampa Posts: 5,661	Re: 4.10 question If you have a Diablo Predator you can reprogram your computer for the 4.10's. Trust me you'll love the 4.10's in your Mach. Some say kills highway mileage, but I am only pulling around 23-2400rpm at 70 with the 4.10's. In city I am still averageing around 17mpg and that was with a hot tune. It has been said before, don't fear the gear! __________________ Just because you're winnin' Don't mean you're the lucky ones TR 2003 (Jezebel) sold Mar 12...

11-30-2005, 12:44 AM	#5
3150Mach1 Love my Mach Join Date: Apr 2005 Location: Charlottesville, VA Posts: 13,678	Re: 4.10 question Agree with what everyone has said. If you are an automatic then 4,10 gear. If a 5 speed you could concider 4.30. I an auto and the 4.10 is great. I would invest in the flash tuner. But first check your local shops to see what they work with. That will determine if yopu get a Diablo Predator or a SCT XcalII. I seen both forsale used on here and on ebay. The preformance tunes alone will add double digit HP and you can play with alot of other stuff. You will need it down the road as you increase the mods to the engine. __________________ 2003 slowmatic 11.105@117mph w/125 shot of Nitrous best to date Kooks LTsw/OR X, elect cutouts, JLT RAI w/C&L 85 MAH,1" Spacer,PP Lower intake,Accufab TB,160 T-stat,EF Cooling Mod,NX Kit,Mez Electric Water pump,SLP Linelock,FRPP 4.10s-Alum Dif Cover-Alum Driveshaft & SL, Steeda Bumpsteer,MM Alum rack bushings,Deep Alum Tranny pan,Predator,Steeda AUCAs,MM ALCAs, Dspecs,MM CC plates & FLSFCs,MRT Guage cluster,AEM WB,MRT hood struts,Seq TLs, carbon fiber hood/trunk/Cobra wing,220 amp alt

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