OverLOAD

Today I busted out my G-Tech

Today, on a ince flat road, relatively clear of traffiic, I ran a 14.032 1/4 mile @ 100.10 mph.

Now, this is according to a G-Tech dyno run, All stock. 6-MT, GT package car with ~30psi tires, 37 degrees F.

I also ran a 14.592 @ 86.16 mph later on the same day. same tire PSI, exterior temp of 32 degrees F, with a 160 lb passenger.

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Here's my 14.592s run, with the 160lb passenger

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Here's the more complete info for the power curve, upper portion

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and the lower portion:

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and the .gtp file from my gtech for the raw data..

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And for reference, I had a friend with a '90 Mustang which I also tested. I can provide that Info to0o if anyone is interested..



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Speed Racer

You beat me by 0.005 seconds!

PoLaK

iTrader: (1)

Any chance either of you can take ur cars to a strip to test out how accurate G-Tech really is?

Ike

The 14.5 @ 86mph should answer that question (it's nearly impossible). Gtechs are fun to mess around with but they mean little when it comes to real world results.

OverLOAD

I didn't say anything about this being accurate. All I said is what I got out of the G-Tech.

As for actually going to a drag strip, this late in the year in Michigan, it's probably not going to happen, as the car is getting tucked in for the winter soon, and the strips are probably all closed anyways.

I would be more willing to believe that the times were a bit innaccurate, but I have no frame of reference here. I would invite the comments of some one who actually has used both a G-Tech, a fixed Dyno, and run thier RX-8 on the drag strip to make the most reasonable comments which would compare the results of the various testing methods to help me put my results into perspective.

Respectfully,

OverLOAD

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Thanks for the info. Speed, you've taken your car to a couple of autoX's how about any drag strip runs for a comparison?

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Speed Racer

OverLOAD,
I've only done a couple of Open Tracking events and the car's performance was very similar to the S2000 on the track. With driver's being equal the S2000 would have pulled away from me slowly.

Like yourself, I live in an area where the tracks are already closed for the season. So maybe in the Spring I'll do a couple of runs at the drag strip and see how the Gtech compares.

islandsoon

Great runs!

I can only add that my brother bought a G Tech pro ( version 3.0) this past summer. He took it along to the track when he ran his 68 Firebird several times at test and tune events (Byron IL). He did run the G Tech while running his 'races to compare with his track slips. His car, running low 14. s was about .49 off. So really running high 14 s. Very consistently .49 off.
He has been nice enough to lend me his G Tech to test the Rotary Extreme intake and the Canzoomer mod once released, though my interests are verifying the HP and Torque curve improvements???, not doing hard launches and 1/4 mile times.
Tom

Speed Racer

That's interesting, I bought mine to validate Mazda's claims and any mods I may happen to install. I guess good minds think alike.

OverLOAD

It's the same philosophy for me also. I'll probably spend well over the $250 for the pro model on future mods. I think that I'd rather know exactly what performance improvements I get out of my purchases.

The whole HP issue still does seem skeptical, but I am very pleased with the performance of my car. I am very interested in tuning more than just my RX-8, and the Gtech will help me do that, Accurate or not, relatively speaking it's a very good comparative analysis

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Ike

If you want to know exactly what you get out of performance mods then your money would have been better spent on dyno runs. However I see where you're coming from, it will at least give you a guesstimate of what each mod is giving you in gains and you can move it from car to car.

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Ike,

You know, you sure make a lot of comments all over the place without substantiating your claims.

1) Do you even own a GTech? Have you even used one before?

2) Why the negative attitude all the time? And why do you have to skulk our forum? This would be a much nicer place if we could get some construvtive criticism here.

3) Show me. You spout out all over the place that this doesn't make sence, or that's not right, or BS this or pissing on just about anyone eles comments that you can. Please justify your claims with something other than conjecture. You say the GTech is innaccurate? Care to elaborate, or spout out anything other than regurgitated comments? How about some real productive searches on your part that do more digging.

I don't mean to get defensive, and fine by me if the RX-8 only puts down 160 rwhp, and can only doa 1/4 mile in 15.5 seconds, but if you want to nag on me about it, you're not going to get just another peron who'll ignore you. You may be just trying to provoke me and others here with your negativity here, and that's what it seems. The real question here, if You have to ask yourself why you are here.

So far, I have yet to see even one single productive comment out of your 800+ posts.

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Ike

1.) I do not own one but have had friends that do. If there wasn't such hostility in your post I would look up and link to you countless posts of how often the Gtech can be inaccurate. I'm not knocking it, like I said it's a fun little gadget. If calibrated properly with accurate info added they can give you useful results. But it's not nearly as useful as a dyno or an actual run.

2.) I'm just calling it as I see it, I don't think I was negative in the post.

3.) If you think a 14.6 @ 86mph is possible then more power to you, if you knew anything about drag racing that alone would clue you in as to how inaccurate the device can be. (this claim is assuming it's an RX-8)

4.) I'm really not nagging on you about it, I was dead serious when I said your money would have been better spent on dyno runs if you really want to know how mods are affecting your car. But if you're having fun with the Gtech then it was money well spent.

Lastly, since you're getting defensive so will I. You posted in the competition racing section of the forums. Last time I checked there was no such thing as a Gtech competition (other than the actual product), and there's a reason for that. There's no racing involved in what you did and there is a pretty large margin of error (in drag racing terms) as well. If you want a productive post look at the one above your last, you could have had 3-5 dyno runs instead of the Gtech and it seems like you wanted to know exactly how your mods were helping your car, a Gtech will NOT do that. Perhaps I'm a little bothered that in past discussions the Gtech runs have been pointed out as actual runs in order to discredit others and their claims about the car not having 250, 247, 238, whatever horsepower. Fun gadget, will give you a ballpark figure of what mods are doing, but not nearly as good as a dyno run, nor is it the same as running an actual 14.0 or 14.6 at the track.

MazdaManiac

iTrader: (3)

Just to stir the pot...

Someone in a yellow RX-8 ran a 14.8 at Maryland International Raceway this weekend.
The other two RX-8s that were running got to just about a flat 15.

Speed Racer

Ike,
Would you mind answering his last question? I'd like to hear your answer.

OverLOAD

C'mon Ike, go buy yourself an RX-8 already. I know you want one. That's got to be the only reason you've hung out here so long.

Dyno runs are great, I wouldn't disagree with anyone about that fact, but still, it remains that even between different dyno's of the same model, there is often a significant margin of error.

My target is to get information on Power levels, and how it is being affected by my mods. For this purpose, I am already very staisfied with the repeatability of my HP runs. I am able to get numbers within 2-3% of previous runs pretty easily. do 2 or 3 runs, and you can get a good average. If you're going to use a stationary dyno, you had better do the same thing or you're almost guaranteed to be off. The 1/4 mile time reported by the GTech is interesting to me, but I have already stated beforehand that in no way do I even consider it to be an actual representation of what I would see on the strip.

I (edit: am) not hostile by nature. I just don't appreciate you coming in here to a friendly discussion, and presenting your unfounded optionions as fact.

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Exactly who is that aimed at?

Ike

I'm tired of answering that question, if you really want to know do a search, I've answered it many times.

mikeb

what???
ike is to tired to battle and defend himself?
I thought I'd never see the day

RussellP

I did what he said and searched for the answer and all I found is him saying "im sick of answering that question, do a search."