he means its not very accurate REAR WHEEL horsepower

its gonna be different on every truck, there are a bunch of variables for this

but for normal driving around, aka not flooring it, the hp reading is pretty accurate crank horsepower

 

ah, it all makes sense now, thanks wert

 

207 i think

i have headers, intake, exhaust, tuner, and efan.. basic stuff.

 

I can't speak for the company. However I know there is a parameter called "torque into Convertor".

I can only assume they take this input and then do the math and display it live?

The next time I data log with my sct I'll compair the two TQ numbers and HP numbers and see how they compair.

Rich

 

Okay, just put mine in last week...my review, ITS AWESOME!!!
did a hp and tq run made 240 hp and 267 ft. ibs of tq.

 

Nice I want one of these now. But so i can see the depressing MPG figure.

 

go to a dyno and get the real numbers. i put that down to the ground in my taco, but my scangauge says 304hp on mine.

 

I had my truck dyno tuned and to the rear wheels my truck WITH a blower is only making a little more than the scan guage is reading for you all with minor mods to no mods.. Not very accurate at all.

 

Yea no way u guys are making that much, a Supercharged Ranger puts down like 270-280HP, no way you guys put down 240 with an intake and cat back. My truck put down maybe 240 to the crank with my mods on a good day.

 

Well, wouldn't there be a difference b/c your measuring rwhp and the scanguage measure crank hp?
Your right nothing is going to be more precise than a dynotune, I'm just telling what mine said.
If the 4.0's are rated at 207 hp (I would guess crank) then an intake and cat-back would add to that, so it would probably be close atleast correct?
I'd take a picture but i really don't want to take a picture at WOT......might wreck lol

 

Whether the baseline is accurate or not is almost irrelevant. It's a fixed starting point. The baseline should give a reasonable measurement for performance mods you add to your truck. In a sense it helps you weed out the BS mods that do nothing.

 

Wayne is correct. It's reading may or may not be "true". But it really does'nt matter for this thread. What matters is that we are all using the same tool on the same engine/pcm. Yeah it's not scientific.. but it's not a bad or inconsistant way to compare one ranger against another out on a public forum.

btw, so far I've been playing with fuel mixes and timing. So far I've been able to get 258HP and 262TQ. Most base fuels (93 oct) will limit my timing and power readings. 22-24deg & 240hp at 5000+ rpms seems to be the norm. On 94sunoco I can get to 27deg and 256HP nearly everytime.

It's been interesting to see what brands of fuel allow for increased timing.
94 sunoco has been the best and shell 93 seems to be 2nd. Worst has been 92 speedway.

Also, I've been playing with acetone. (have for years on different cars) It does make a difference with the proper base fuel and balance of timing and a/f settings.

Rich

 

Very interesting... :)

 

per inch of driveshaft

 

I hit 228hp at WOT on the freeway...

I dont see how that can be right, all I have is a Gibson cat back.

 

your right its not. its maybe, but probably not even crank hp.

 

It's a calculation based off of "TQ into convertor" Power measured in this way depends on many variables. IMO the most reasonable way is to make a 3rd gear pull from off idle up to 5600 rpms. These are the numbers I post..

I had not read this parameter in quite a while. Just by chance I happened to this morning on the way in! I hit 243hp at 5400-5500 rpms. (DA was 1145ft Here is a link for DA )

Even though it may not be the same number as a engine dyno. It is a way that we can compare one truck to another in a reasonably consistant manner.

Rich

 

145 Hp & 154 Ctq On My 3.0 Automatic,

Someone Get A Dyno And Then Compare With The Gauge Please

 

they are still 149 free shipping on http://www.stuffforyourranger.com/

if im gonna spend that kind of money on an electronic accessory for my truck, its gonna be a gps.

 

Man my dern horsepower aint gotten any higher than 180 lol

 

little bump required.

pulled 336 peak HP today

 

Cool!!

For some strange reason mine seems to remain at the 240-250 area even when spraying? The TQ will climb a little.. but the HP won't? Oh well.. I have timeslips that prove I'm puttin down a few extra ponies.

EDIT: Just went out. On my 87 octane tune pushing 16degrees of timing I got 240hp at 5100 to 5500




Rich

 

nice!

 

when are you guys getting the reading? at top speed?

 

Max HP on a stock longblock would occur in the 5000+ area. Max TQ will be best seen in 3rd right after the TQ convertor locks up. (manually putting it in 2nd = 3rd in reality)