Installed Hypertech Programmer III

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Installed Hypertech Programmer III

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Installed Hypertech Programmer III - 10/11/2007 7:40:48 PM

rriddle3

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Joined: 12/22/2006
From: Fort Worth,Texas
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Okay, I got a very good deal on a Hypertech and programmed it in this evening. I set it for 87 octane, stock top speed limiter, stock rev limit, stock shift points, increased shift firmness, and adjusted for tire size. The first thing I have noticed is that the throttle response from either gentle or quick acceleration is definitely smoother and quicker. No more flat spot or delay as you mash the pedal.
The online calculators I found for determining tire height do not match up to the height I got for mine by measuring the rolling circumference and dividing by Pi. I used the closest setting the programmer had to my actual measurement for adjusting the tire size. Now here's a question for anybody who has the correct answer. Is there a chart/formula for determining the rpm's per mph based on tire height or circumference? The chart in the Hypertech manual is for a 30" tire height and my 235/70x15's came out to 27.25".
I know that the only way to tell what would be the best shift points would be to run it through the traps, but this truck will never set tire to a dragstrip. So that's my story and I'm sticking to it.

< Message edited by rriddle3 -- 10/11/2007 7:54:54 PM >

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2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights

Post #: 1

RE: Installed Hypertech Programmer III - 10/11/2007 8:00:47 PM

TripleBlackBlazer

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722 revolutions per mile per tire size calculator that swartlkk posted a while ago...

not sure if that's what you're looking for, but it shows 28" diameter for your 235/70's

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RE: Installed Hypertech Programmer III - 10/11/2007 8:02:58 PM

rriddle3

Posts: 1552
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From: Fort Worth,Texas
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No, that's the revs of the tire per mile. I'm talking about how many engine rpm's per mph based on tire height, but thanks.

< Message edited by rriddle3 -- 10/11/2007 8:05:23 PM >

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2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights

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Post #: 3

RE: Installed Hypertech Programmer III - 10/11/2007 8:07:10 PM

swartlkk

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From: Waterloo, NY
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That all depends on the gear you are in and the rear end ratio your truck has...

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RE: Installed Hypertech Programmer III - 10/11/2007 8:14:58 PM

rriddle3

Posts: 1552
Joined: 12/22/2006
From: Fort Worth,Texas
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Exactly. That's the way the chart from Hypertech is broken down, but the tire height they use is 2.75" taller than mine. I don't know how much that would skew the figures they show.

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2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights

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Post #: 5

RE: Installed Hypertech Programmer III - 10/11/2007 8:21:47 PM

swartlkk

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Joined: 5/1/2005
From: Waterloo, NY
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The 4L60E has 1st through OD ratios of 3.06, 1.63, 1.0, and 0.7.

4.10 gears, your final drive ratios to the wheel are 12.55, 6.68, 4.1, & 2.87 1st through OD respectively.

3.73 gears, 11.41, 6.08, 3.73, & 2.61.

3.42 gears, 10.47, 5.57, 3.42, & 2.39.

3.08 gears, 9.42, 5.02, 3.08, & 2.16.

So from there, you would have to then convert the circumference of the tire in inches to miles and RPM to RPH (revs per hour), etc. Or just use the tires revs/mile (722 for 235/50R15) and back factor to the engine revs per mile. So in 3rd (1:1) and 3.73 gears, you are looking at 2693.0 revolutions per mile (722 tire revs per mile x 3.73 rev engine to 1 rev tire = 2693.0 engine revolutions per mile).

< Message edited by swartlkk -- 10/11/2007 8:24:32 PM >

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RE: Installed Hypertech Programmer III - 10/11/2007 8:30:12 PM

rriddle3

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From: Fort Worth,Texas
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Ow! I'll have to work that out tomorrow. Thanks, Kyle.

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2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights

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Post #: 7

RE: Installed Hypertech Programmer III - 10/12/2007 2:28:52 AM

drperry

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From: GP AB CA
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I did notice, that with the Hypertech installed, it's a little easier to stall out the truck when in the low RPMs...

It takes more throttle to keep it above 600 when letting off the clutch, lol.

Other than that, though, she works good, mileage seems to be pretty good so far...

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RE: Installed Hypertech Programmer III - 10/19/2007 2:48:07 PM

BSchmity69

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did u get a mpg gain

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RE: Installed Hypertech Programmer III - 10/19/2007 4:58:33 PM

rriddle3

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From: Fort Worth,Texas
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quote:

ORIGINAL: drperry

I did notice, that with the Hypertech installed, it's a little easier to stall out the truck when in the low RPMs...
It takes more throttle to keep it above 600 when letting off the clutch, lol.
Other than that, though, she works good, mileage seems to be pretty good so far...

Not a problem with my automatic.

quote:

ORIGINAL: BSchmity69
did u get a mpg gain

No change (might be the right foot).

_____________________________

2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights

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Post #: 10

RE: Installed Hypertech Programmer III - 10/20/2007 12:43:37 PM

BSchmity69

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you guys are killin we with your heavy sneakers. haha thanx ne ways

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RE: Installed Hypertech Programmer III - 10/20/2007 3:21:24 PM

drperry

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From: GP AB CA
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Hey now, I got a gain in MPG, even with a heavier foot

lol

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Post #: 12

RE: Installed Hypertech Programmer III - 12/26/2007 9:27:10 PM

nnnon632

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How many say its a run for the money? I am debating on that, but I don't know if i want to spend the money? Is it that great

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Post #: 13

RE: Installed Hypertech Programmer III - 12/26/2007 10:53:33 PM

drperry

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I like it, for the most part... It seems to have lost a little bit way down low in the RPM's (sub 1000 RPM range) but otherwise gives a little bit more pep, and probably gained 1 - 2 MPG on the highway... or if I baby it in town, lol

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RE: Installed Hypertech Programmer III - 12/27/2007 7:13:12 AM

nnnon632

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do you feel much of a power difference. I have an intake and exhaust will that help much?

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98'
4x4
K&N air filter
Flowmaster 40 series
Hunter Brushguard
a lot more coming

(in reply to drperry)

Post #: 15

RE: Installed Hypertech Programmer III - 12/27/2007 10:44:18 AM

rriddle3

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From: Fort Worth,Texas
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Not a lot that you can feel, but it actually takes a fair jump in HP to be able to feel it. The main benefits are as I discribed in the first post. Intake, exhaust, and a programmer are a good combination.

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2002 Blazer LS 4dr 2WD Auto Trans
Hypertech PP III Programmed
Flowmaster 50 Series Delta Flow Muffler, C6 Corvette Exhaust Tip
TYC Elegante carbon fiber tail lights

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Post #: 16

RE: Installed Hypertech Programmer III - 12/27/2007 1:15:07 PM

drperry

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The only thing you MIGHT feel is a change in throttle response...

The butt dyno isn't all that accurate, otherwise, lol.

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Post #: 17

RE: Installed Hypertech Programmer III - 8/12/2008 3:24:02 PM

97ssblazer

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yea i have a built tranny so i want to push those shift points and firmness all the way up... it all ready squaks 1 > 2 :)

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