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Old 02-05-2007, 06:13 PM
Join Date: Feb 2007
Posts: 1
Default Speed Limiter

I read that the cadillac devilles are all speed limited to 110.
is there anyway to get rid of the speed limitor?
please reply,

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Old 02-05-2007, 08:16 PM
Join Date: Jan 2007
Posts: 41
Default RE: Speed Limiter

Have the computer reprogrammed, either with a chip or power programmer. Not sure exatcly where you can find a chip tho, not too much of anperformance aftermarket for devilles
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Old 02-06-2007, 01:05 AM
92_Daddylac's Avatar
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Join Date: Nov 2006
Location: Columbus Ne
Posts: 407
Default RE: Speed Limiter

my 92 deville speed limiter is at 107mph. you can get rid of it by disconecting the VSS Sensor which tells the ecm how fast you are going and when its disconected the ecu doesnt know how fast you are going so it cant limit your speed but the bad news is you dont know how fast your going either and your odometer doesnt work too. which is considered odometer fraud.(VERY ILLEGAL)! I never did this but i know it works cuz i had a 98 neon and the speed sensor was broke and i could do 135mph and the odometer was stoped at 88,000mi and when i got the speed sensor fixed it limited me to 125mph.

Last Owned Caddy- 98' Seville SLS (SOLD 2-15-12)
Other Caddy's- 92' Deville (R.I.P.), 89 Brougham
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Old 02-10-2007, 01:13 AM
Katzmans Caddy's Avatar
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Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: Speed Limiter

I am in Canada and my 98 GM Canada manual spells out the speed limiter as follows:
Deville & D'elegance top speed 180 kph ( that would be about 115 mph)
Concours top speed 210 kph (that would be about 130 mph)

It also shows the following:

Deville & D'elegance 0 - 60, 7.8 seconds with 3.11 axle ratio & 275 HP / 300 lb-ft
Concours 0 - 60, 7.5 second with 3.71 axle ratio & 300 HP / 295 lb-ft

To remove the limiter do as others have indicated. I would caution you to make sure you have properly speed rated tires if you do so. Nothing worse than throwing a belt at 125 mph! It tends to raise one's heart beat a tad. I know, I did it in my 35 year old muscle car on BFG's that were S rated. First the right rear and a split second later the left. Hang on!
2006 DTS Performance - L37 32v Northstar NHP V8 292 HP - 1 of 1
1999 STS - L37 32v Northstar V8 300 HP
1998 Deville D'Elegance - LD8 32v Northstar V8 (Sold July 9, 2011 with 225,000 km)
1993 Fleetwood - L05 5.7 TBI V8 (Sold July 18, 2012 with 308,000 km)
1999 GMC Suburban SLT- 5.7 Vortec
1998 Olds 88 LS - Series II 3.8 V6
1973 Pontiac LeMans GT - 454 V8 1 of less than 5
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