HP/Torque Conversation (Scan Gage ll)

4734 Views 31 Replies 11 Participants Last post by twcom, Oct 28, 2019

twcom

Discussion Starter · Aug 9, 2019

The first question I have makes all the difference in what this thread will be.

So the "Scan Gage ll" has an HPR reading. I believe this to be a monitor on horsepower being used a a given time. Question is , is that the case? and what am I really looking at when with this monitoring mode?

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twcom

Discussion Starter · #21 · Oct 25, 2019

Yes on the out side. I think it should help with that with the wide low profile tires I had lost a lot of crosswind feeling already Wind noise is is cut down a great deal. Between the dash and the windshield is the new wind noise focus. The same striping will work there too on the inside. I also have a thin strip of electrical tape covering the top of the windshield edge gap. Quieting down the Smart lol. Just so I could put on a noisier exhaust .... Umph umph umph.

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SARKIYA

· #22 · Oct 25, 2019

twcom said:
I will for sure get a turbo Smart 451 in the twcom Stable, and expect that to be just as fun and I would also expect to call that one quick. Also my current Smart will remain on a poor mans dollar budget. So past tried and true low dollar shade tree hot rodder tweaks are the route it will be going. Remember at this point my $3,900 Smart (on a smooth Surface) is a really nice comfortable road car and will run at 95 mph with out any struggle get a little going up hill shift in down to forth and don't miss a beat. So just trying to fully understand the car and applying some of the inexpensive shade tree tweaks that have endured the test of time just to get a little more than what you have is the prize.

Coil Packs and spark plug choices same as yellow Accel wires and auto light split fire plugs. lol

Cold air intakes similar to high stack air filters and ram air set ups. another lol

Cherry bombs and Flow Master mufflers any one.......

Now lets say ....I'm done with that..

How do we get to the 4.10 gear change equivalent............. ?

Yes, the HPR readout on the ScanGauge is for the current horsepower use, although it's solely based on the specifications of the engine of the car it's connected to when you set up the scangauge. But there's a good chance that it's pretty accurate, too.

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jetfuel

· #23 · Oct 26, 2019

...OK I'll play...
Torque = HP x 5252 divided by rpm
...no stock smart with a speed limiter still living inside the computer will go faster than 89 mph....maybe 90 on a downhill burst but it will quickly return to set speed ...GPS on hand..
...stock engines will deliver at most 61 HP. @ 5800 rpm and 59 torque @ 5600...real wheel dyno tested...not butt tested...on a warm day.
...

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twcom

Discussion Starter · #24 · Oct 26, 2019

Does final Drive ratio effect these results?
What Qualifies as stock.?
Which Speed Gauge Should we consider, the speedo needle, Scangage ll, Smart on board High end radio navigation unit, or Waze mobile navagation system ? I wont chance running past the High way Speed Signs at 90 lol. Right now they are normally 3 mph below my speedo needle and in line with Waze.

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jetfuel

· #25 · Oct 26, 2019

...anything other than a modified computer is stock...for speed..

Jetfuel...for looks is another story...

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SARKIYA

· #26 · Oct 26, 2019

SARKIYA said:
Yes, the HPR readout on the ScanGauge is for the current horsepower use, although it's solely based on the specifications of the engine of the car it's connected to when you set up the scangauge. But there's a good chance that it's pretty accurate, too.

I will for sure get a turbo Smart my ip birthday wishes tneb 451 in the twcom Stable, and expect that to be just as fun and I would also expect to call that one quick. Also my current Smart will remain on a poor mans dollar budget. So past tried and true low dollar shade tree hot rodder tweaks are the route it will be going. Remember at this point my $3,900 Smart (on a smooth Surface) is a really nice comfortable road car and will run at 95 mph with out any struggle get a little going up hill shift in down to forth and don't miss a beat. So just trying to fully understand the car and applying some of the inexpensive shade tree tweaks that have endured the test of time just to get a little more than what you have is the prize.

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1983JZR3W

· #27 · Oct 27, 2019

Has anyone else noticed new member "SARKIYA" is just copying other people's posts? He has four posts and they are word for word copied from others. He even quoted himself on a "borrowed" post. Mods may want to check into it. Thanks.

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Reactions: 1

jwight

· #28 · Oct 27, 2019

Yes, it's obvious. You can hit the report button (the explanation point symbol at the bottom of each post) to make an official report that goes to the moderators.

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twcom

Discussion Starter · #29 · Oct 27, 2019

jetfuel said:
...anything other than a modified computer is stock...for speed..

Jetfuel...for looks is another story...

Ok so the Harlem Edition is Stock. With my current 205/17 40 tires I will attempt to confirm what speed Scan gauge, and Waze are showing me at. Today I am tagging along with a Dodge Durango group from the Bronx NY on a run to Bear Mountain . It's a drenching storm so I may not crack 90 today lol. But if they happen to go for it I'm in...
Thing is, I often make runs where my speedo needle is between 95 and 100. At those times my attention has been occupied, as these spurts come with the flow of traffic and following a spirited driver or two leading. But now I'm curious to see if Waze shows me above 90 going up hill. .
I ditched the fat boy Dodges and hit the back roads up to Bear Mountain. Nice ride in rain. I am in the parking lot with them now but I won't be out in this rain taking pics. Lol.

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twcom

Discussion Starter · #30 · Oct 28, 2019

...OK I'll play...
Torque = HP x 5252 divided by rpm
...no stock smart with a speed limiter still living inside the computer will go faster than 89 mph....maybe 90 on a downhill burst but it will quickly return to set speed ...GPS on hand..
...stock engines will deliver at most 61 HP. @ 5800 rpm and 59 torque @ 5600...real wheel dyno tested...not butt tested...on a warm day..

Standard Features:

1.0L I-3 Engine.
5-spd auto-shift man w/OD Transmission.
70 @ 5,800 rpm Horsepower.
68 @ 4,500 rpm Torque.
rear-wheel Drive type.
ABS and driveline Traction control.

2014 smart fortwo pure 2dr Coupe Specs and Prices | Autoblog

https://www.autoblog.com › buy › specs

I did find a highway run on the way home where my Speedo needle went far right.........
Speedo needle.............................. 95 mph
scanguage ll reading..................... 90 mph
Waze navigation app..................... 92 mph
Car was on NY thruway i87 south, on a flat stretch. had to lift due to traffic, no other opportunity presented the rest of the ride home, It was a very wet rainy day I felt car had a bit more to give. This was done with my car as lead car, into the wind not drafting an SUV, which is when it is most ideal to run at higher speeds.

The Harlem Edition is a 2014 Fortwo Passion running 205/40 17 tires on rear 195/40 17 tires up front. Ram Air side scoop with KnN filter in Stock Air box. Stock Exhaust.

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jetfuel

· #31 · Oct 28, 2019

Give me a minute...to stop laughing

Jetfuel...for sure..

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twcom

Discussion Starter · #32 · Oct 28, 2019

So now that that's out of the way. Higher speeds are of no issue. My Smart in it's present condition will never be blocking American highway traffic. Between keeping car in the correct gear and roll management, rolling on ramps are no issue.
Standing on ramps need a great deal of space and judgment. Next up a few more weather strips and a cat back exhaust system.
Advice on Smart exhaust welcomed with performance the first priority which will then be tailored to acceptable sound level and finally looks. Price is not an issue on this one because I don't need this item. I just want it and have until April 2020 to get it done. That way I can put a couple of weeks on it before heading out west.
So as small as it may be, are some Smart Fortwo aftermarket systems better than stock exhaust. Off those that are better then stock, which may offer more low end (or torque) benefit. Solo side out #996733 version an Sila twin center exhaust are leading canidates with out me knowing much. The Solo keeps my current valance, the Sila would add a valance to the total cost.

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