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I did a couple of runs yesterday morning
with the g-tech pro.My best run so far is a 14.9. Now this is without any tuning,stock tires and full interior.I think this is great tuning device and is pretty accurate.
What do you guys think about this product?
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98 ACURA INTEGRA LS
JRSC@6PSI
I've heard good things about this device.
I was thinking about getting one down the road.
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95 EX Coupe w/SC'd JDM B16 @9 psi
[This message has been edited by HyBridEX (edited October 14, 2001).]
another great way to use it to tune is with the horsepower function. it won't give you a comparable number to a dyno due to wheelspin and wind, but you can get an idea of what changes to your various settings do to the power. enter the weight of the car. find a safe, flat, and SAFE road. start the HP function. DON'T launch. just accelerate nice and slow. pick a speed, say 30mph in 2nd gear, cruise at it, and then floor it. watch the readout.
change settings on your mods, and try again! this method removes the vagaries of the launch from your measurements. your 0-60 times, for example, will vary by as much as a second depending on your launch. simply flooring it in gear at a fairly low speed removes the driver factor.
the best i've run on the gtech is 0-60 in 5.8 and the 1/4 in 13.8. i doubt i'll be able to pull that time at the track, but who knows!
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by acuraboy:
I did a couple of runs yesterday morning
with the g-tech pro.My best run so far is a 14.9. Now this is without any tuning,stock tires and full interior.I think this is great tuning device and is pretty accurate.
What do you guys think about this product?
<HR></BLOCKQUOTE>
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schwett: What was your horsepower reading?
I did a 154.
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98 ACURA INTEGRA LS
JRSC@6PSI
How much did you guys pay for your G-Tech Pro?
Also, where did you purchase it from?
Thanks
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95 EX Coupe w/SC'd JDM B16 @9 psi
http://community.webshots.com/user/hybridex
testing sig..........
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95 EX Coupe w/SC'd JDM B16 @9 psi
http://community.webshots.com/user/hybridex
I purchase it thru summit racing for
$146.00. Thats including shipping and handling. The service is excellent!
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98 ACURA INTEGRA LS
JRSC@6PSI
I have had one for a year and a half. Its pretty good for the money. Kind of a home dyno if you will.
When you do a baseline run do like Schweet said and don't launch. But one thing he left out was consistency. Do about 10 runs for each new change or part. 5 in each direction using the same gear, and same stretch of road every time. Then take the average. Make sure your car weighs as much as the factory says it does. My integra actually weighs 2692lbs with a 20lbs sub and 1/4 tank of gas compared to the factory 2650lbs.
Next you have to adjust for temperature, altitude and humidity. Turn on the weather channel and get the current conditions
Every 10 degrees is 1% power change (warmer=less)
Every 10% Humidity is 1% power change (more=less)
Every 270ft of elevation is 1% power change
All of these things add up. And it still only gives you peak.
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94 LS SC@5psi and engine work
dyno 181/158
13.98@97mph
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It seems to work as advertised but the problem I have with it is trying to find both flat and barren roads (and not attract notice from the cops, or a pissed off farmer, [from racing up and down his road several times]) Or the fact that the first really decent places to use it are 25-30 miles away.
You can take it to the dragstrip -- but then you don't really need it there.
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"There's nothing wrong with the car except that it's on fire."
Blown ls: What are your mods? Your car
is hella fast for an ls with only 5psi.
Did you time it at the track or with
the g-tech? I think the fastest guy in
here with an ls is zach. Who ran i think
was a 14.7.
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98 ACURA INTEGRA LS
JRSC@6PSI
Oh its a laundry list of mods....
Lets just say there is $8000 in it. And about $4000 is trial and error, or trial and no gain. Here are the highlights:
1. JR 6psi LS Kit
2. SRP 10.5:1 pistons .020 over (equal +23cc
displacement)
3. Milled head (11:1 compression)
port and polish, 3 angle vavle job
4. JG1001 cams (mild, mid range cams, no
gains at peak, bumps up torque from 3500-
4500 and gains 15Hp at redline, you can
say it increases power on both sides of
the peak, but not the peak itself)
FOR SALE if anyone wants them
5. AEM cam pulleys (tuned for more overlap,
and more compression, decreases PSI to 5
but lowered my E.T. .2 seconds)
6. self ported TB
7. Homemade ram air intake (high beam
headlight scoop)
makes +1psi@80mph and +2psi@130mph
8. DC 4-2-1 header (great if not boosting)
now it only helps in midrange
9. Flowmaster 2" muffler (great midrange)
10.Jacobs ignition
11.Shogun power tuner (have ignition timing
at 12.5 degrees backing it down to 10 by
full boost) Leaned out fuel by 10%
inbetween 5000-7000rpm
12. 225/45/14 BFG Drag Radials (21.75" tall X 8.8" wide) with 15psi (lowers gear ratio by 10% (consistent 2.10 60ft times) on street legal tires (I drive them to the track)
13. 10lbs 14" BBS rims from a wrecked Accord
14. A lot of other small stuff that together might make up a whopping 3HP
When you finally figure out that ALL of your parts need to match the same RPM range your car will finally be fast (only in that range though).
Note. For all you supposely gear heads. A 10% lower gear ratio has the same ET results as a 10% increase in torque!
Notice how I have a fast ET but a slow Trap speed. Trap speed is HP divided by weight, and ET is Torque MULTIPIED by gear ratio!
Check out some of my other posts in cam query and other places where I talk about tuning and how it works and why....
By the way I have 210,000 miles with original parts unless noted otherwise above
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94 LS SC@5psi
dyno 181/158
13.98@97mph
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Oh yeah, that measurement was at the track after playing with my cam gears. I would never post or brag about a G-tech time, its to wishy-washy and too much human error involved.
I had that thing tell me I had 500hp once. Of course I was accelerating down hill. But it was only a 10% grade. Weird huh?
I have taken my G-tech to the track. It measures on average .2 seconds fast with 5mph higher traps (because its not a trap speed but the highest velocity thru the 1/4 mile.)
Its very good to measure bolt ons though.
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Chris
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Oh yeah, that measurement was at the track after playing with my cam gears. I would never post or brag about a G-tech time, its to wishy-washy and too much human error involved.
I had that thing tell me I had 500hp once. Of course I was accelerating down hill. But it was only a 10% grade. Weird huh?
I have taken my G-tech to the track. It measures on average .2 seconds fast with 5mph higher traps (because its not a trap speed but the highest velocity thru the 1/4 mile.)
Its very good to measure bolt ons though.
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Chris
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Blownls: It's kinda weird though,
the gsr guys are around 210 hp and
here you are at 180 and doing high 13's.
Why is that?
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98 ACURA INTEGRA LS
JRSC@6PSI
Anyways, Thanks blownls for the information.
You really know your stuff.
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98 ACURA INTEGRA LS
JRSC@6PSI
Its all about application, and knowing how to use it correctly to your advantage. You don't drive a non-vtech like a Vtech.
I have a serious torque advantage. I have a serious gear ratio advantage (only in the first two gears though). Relook at all the things that I have done above. You probably will pick up on all my parts are for a particular rpm range. A range that gives me, a 30HP advantage over boosted GSR, when I down shift, into this midrange band, my car is going to town in a hurry.
My 11:1 compression ratio also helps torque 10% better than a GSR, since I have a 10% higher compression ratio, I get the same effect as they do with a couple psi more boost.
And It all comes down to driving it like you stole it
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