hypertech programmer for lt4
Thread Starter
Drifting
Joined: Dec 2005
Posts: 1,314
Likes: 1
From: Chicago Illinois
hypertech programmer for lt4
I just brought an lt4 vette and it runs hot. I wanted to buy a hypertech progammer to lower fan temp. setpoints. Is this programmer also good for supertunning the car or not? Can I expect a little more performance from this programmer? I have a k&n filter with open cover and muffler eliminator pipes on it now. Thanks.
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
I'm of the opinion that there are two things a programmer can do very nicely: turn the fans on at a lower temp, and change speedo calibration.
As far as giving you measurable power gains, if you don't expect it you won't be too disappointed.
Larry
code5coupe
As far as giving you measurable power gains, if you don't expect it you won't be too disappointed.
Larry
code5coupe
Racer
Joined: May 2004
Posts: 392
Likes: 0
From: VA
I think you'd be better off spending your money elsewhere. If you want a mainstream tuner you could try Superchips, as I've heard good things about them. Or you could try some aftermarket tuners like pcm4less,fastchips or try LT1 edit. I ran a Hypertech programmer on my 97 t/a and about the only use I saw for it was for changing rear gears and tire calibration, along with taking the speed limiter off. Good luck.
Racer
Joined: May 2005
Posts: 279
Likes: 0
From: houston texas
Originally Posted by robert123
I just brought an lt4 vette and it runs hot. I wanted to buy a hypertech progammer to lower fan temp. setpoints. Is this programmer also good for supertunning the car or not? Can I expect a little more performance from this programmer? I have a k&n filter with open cover and muffler eliminator pipes on it now. Thanks.
Racer
Joined: May 2005
Posts: 279
Likes: 0
From: houston texas
Originally Posted by Sinister87
$100.00 is alot to spend just to turn on a fan earlier when it could be done with a toggle switch for about $5.00.
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Thread Starter
Drifting
Joined: Dec 2005
Posts: 1,314
Likes: 1
From: Chicago Illinois
By the way, my temp went up to 250 and the fans still did not come on.
I live in chicago so turning on the ac did not seem to work because it was too cold outside. Is this how it works? When I picked up the car in Miami it was 85 outside and I turned on the ac and the fans did come on. Once again, thanks for the help.
I live in chicago so turning on the ac did not seem to work because it was too cold outside. Is this how it works? When I picked up the car in Miami it was 85 outside and I turned on the ac and the fans did come on. Once again, thanks for the help.
Melting Slicks
Joined: Aug 2003
Posts: 2,101
Likes: 0
From: Orange TX
Originally Posted by rocco16
I'm of the opinion that there are two things a programmer can do very nicely: turn the fans on at a lower temp, and change speedo calibration.
As far as giving you measurable power gains, if you don't expect it you won't be too disappointed.
Larry
code5coupe
As far as giving you measurable power gains, if you don't expect it you won't be too disappointed.
Larry
code5coupe
If you can pick one up cheap they are ok but I would not pay full price. JMO
Le Mans Master
Joined: Jun 2002
Posts: 6,097
Likes: 2
From: Cincinnati Oh
Originally Posted by rocco16
I'm of the opinion that there are two things a programmer can do very nicely: turn the fans on at a lower temp, and change speedo calibration.
As far as giving you measurable power gains, if you don't expect it you won't be too disappointed.
Larry
code5coupe
As far as giving you measurable power gains, if you don't expect it you won't be too disappointed.
Larry
code5coupe
I bought one used for my LT4 for the sole purpose of changing the fan on/off settings. You can also change the speedo for gears or your rev limiter. I did not download the "performance" program. When I changed the fan settings I already had installed a 160* t-stat, and now I never see temps over 200*. I think its good for my use. I was quoted $180+ (by certain mail order tuners) to have my ecm programmed to change the fan settings, but at that time I had no other mods so a reprogram by a performance shop did not make sense financially. I spent $120 on the hypertech. When I eventually do get my ecm re-programmed, I have them set the fan etc., and I'll sell the hypertech and re-coup some of the money I spent on it. Make sure you verify with the seller that the vehicle the hypertech was used on was returned to the stock program before sending it to you, otherwise you can not use it.
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by all4c4lt4
Make sure you verify with the seller that the vehicle the hypertech was used on was returned to the stock program before sending it to you, otherwise you can not use it.
Caveat Emptor.
Larry
code5coupe
Racer
Joined: May 2004
Posts: 392
Likes: 0
From: VA
After the install of my 383 in my 87 t/a, I also noticed my fans did not come on(one for the rad, one for the a/c). I also installed an aftermarket chip, so I called them to verify they programmed it in the chip, which they confirmed. So after some troubleshooting and referring to my FSM I found that the fusible link coming off the battery to the fan relay was burnt up, replaced the link and all is well.I would start by checking the fan relays, or your temp sensor, short in wiring or a burnt fusible link like mine was. Good luck in finding your issues with the fans.
Safety Car
Joined: May 2002
Posts: 4,010
Likes: 26
From: Somewhere nowhere
The LT4 has a dual speed fan setup. So you think you can duplicate the low-high speed programming in 5 minutes with a toggle switch. good luck
I love my hypertech !!!!
I changed the fan temps, and I changed the REV limiter.
and in the winter time, I put the fans back to OEM temps.
it was worth the $175 I paid.
I love my hypertech !!!!
I changed the fan temps, and I changed the REV limiter.
and in the winter time, I put the fans back to OEM temps.
it was worth the $175 I paid.
Melting Slicks
Joined: Nov 2002
Posts: 2,471
Likes: 2
From: 1993 Quasar Blue 'vert Scottsdale AZ
Originally Posted by robert123
By the way, my temp went up to 250 and the fans still did not come on.
I live in chicago so turning on the ac did not seem to work because it was too cold outside. Is this how it works? When I picked up the car in Miami it was 85 outside and I turned on the ac and the fans did come on. Once again, thanks for the help.
I live in chicago so turning on the ac did not seem to work because it was too cold outside. Is this how it works? When I picked up the car in Miami it was 85 outside and I turned on the ac and the fans did come on. Once again, thanks for the help.
