S
Skant
Guest
I'm buying a Hypertech Programmer III for my LT4 because of a rear end change from 3.45 to 4.11. So I needed it for that purpose.
But as long as I have it... what do people think about their performance program on the LT4? I've searched the forums and see mixed reviews on the hypertech... some say its great, some says it's very little difference, and a couple even say it was worse than stock. (However, I think the latter had other mods to their vehicles where Hypertech specifically says that you should not use their enhanced programs if you've made alterations other than improved air box and exhaust... they even specifically list MAF changes (descreening or larger MAF) as something they won't work well with)
Hypertech actually has dyno charts on their site for the LT4 showing an 8hp increase (which sounds about right really). Interestingly, they have none for the LT1 which I think is where I hear people saying it made no real difference.
So it seems like since I have the programmer anyway... and all I have is an air rammer intake and borla exhaust... that should be ideal for their enhanced program... I aught to just put it on.
They do say it's for 93 octane fuel... or the best fuel available in your area... well, in the bay area here 91 octane is the best you can find. Will that present a problem? Nullify the advantages maybe?
Also... they talk about 160 degree and 180 degree thermostats to go with it. I may get one of these. On the forums I see some comments that 160 may be too low in cold climates. But I live in California. It should still be okay with 160 thermostat for smog?
I might buy the 160 degree thermostat and do the coolant bypass and thermostat at the same time.
Thoughts?
But as long as I have it... what do people think about their performance program on the LT4? I've searched the forums and see mixed reviews on the hypertech... some say its great, some says it's very little difference, and a couple even say it was worse than stock. (However, I think the latter had other mods to their vehicles where Hypertech specifically says that you should not use their enhanced programs if you've made alterations other than improved air box and exhaust... they even specifically list MAF changes (descreening or larger MAF) as something they won't work well with)
Hypertech actually has dyno charts on their site for the LT4 showing an 8hp increase (which sounds about right really). Interestingly, they have none for the LT1 which I think is where I hear people saying it made no real difference.
So it seems like since I have the programmer anyway... and all I have is an air rammer intake and borla exhaust... that should be ideal for their enhanced program... I aught to just put it on.
They do say it's for 93 octane fuel... or the best fuel available in your area... well, in the bay area here 91 octane is the best you can find. Will that present a problem? Nullify the advantages maybe?
Also... they talk about 160 degree and 180 degree thermostats to go with it. I may get one of these. On the forums I see some comments that 160 may be too low in cold climates. But I live in California. It should still be okay with 160 thermostat for smog?
I might buy the 160 degree thermostat and do the coolant bypass and thermostat at the same time.
Thoughts?