Samps

I have a good chance to get on a dyno and make some runs. But without any fuel control, what could this do for me? I guess I could adjust timing to gain 1 horsepower, but is that worth $40? I think it would be a waste; but if you guys could come up with a good reason for me to do it I will.

scathcart

To find out you're only making 100 rwhp and then cry yourself to sleep?

(Cover's TII driving head and runs from flying objects)
Sean

Boost Lee

iTrader: (3)

if you haven't dynoed before and are planning to do mods to the car, it would be a good way to see what the mods will do to your car after they are installed.

zyounker

Pretty much a waste of money unless you want to have a baseline before mods...


-Zach

scathcart

Did either one of you notice his sig?
What does he have left to do? S-AFC? Bridgeport?

tmak26b

It's good to do a dyno run so you knopw what it actually runs. I've seen so many people who thinks they can do this and that, end up not hitting 110. Get some prove. Mods dont mean anything if it is crappy

NZConvertible

A dyno run is worth every penny. Knowledge is power. You shouldn’y start modifying if you don’t know what you had to start with and you don’t know if everything’s running properly to start with. By measuring A/F ratio and plotting this on the same graph as power and torque you can see if your mixtures are safe and how they’re affecting output.

Samps

That may have been what I needed to hear; thanks!

And scathcart, I'm adding you to my "people I need to throw things at" list.



I know my vert is not gonna pull 200rwhp I really don't care what numbers I get. I know that my car is fast enough now that I can scare myself. It is also fast enough to always keep me moving as fast as possible on the roads I drive. More power would probably just make me wreck. I don't drag race or street race; I don't race at all, come to think of it. I honestly like to just go out and put the top down, and drive; for hours at a time. I do like to keep my car running in the best way possible though. If a dyno run can point out just one flaw in my system then it will be worth the money.

SureShot

Here is a good fantasy setup. Get a G-Tech. Set it to 6000 lbs. It will show some awesome HP numbers.
Next get a 200 MPH faceplate for the speedo..

Samps

That's another issue. Weight! I have no idea what my car weighs. I really can't get an accurate dyno reading without knowing the weight, correct? I have removed ALOT of stuff.

tmak26b

My friend found out his 6 port and VDI problem after he dynoed it. You never know

go_speed_go

When I dynoed, they didn't need the wieght of the car.

Make sure they can plot your A/F ratio. Without it, there's no way to see if you're making optimal power.

With your mods, if everything it working right, I'd guess ~150 rwhp.

tmak26b

can be 150-160 if his car is running right

Samps

I am more interested in wheather or not the car is running right then the stupid number. I would rather make 120rwhp and have a well running and set-up car, then have 200rwhp and a poor set-up.

tmak26b

Trust me, you can tell if your car is running right by looking at the dyno. I know of 2 guys who dynoed their 89+ NA. 2 of them came out with bad VDI

darkwaveboi

only around 150-160rwhp? dont the 91's come with around 130rwhp?

RETed

It's good for a baseline, in case you're looking to do future mods.
Also, it's good for troubleshooting stuff you have no idea you had.&nbsp This covers the 3,800RPM hesitation, and 6-ports/VDI operation on your vert...




-Ted

NZConvertible

A rolling road dyno doesn't need weight. It measures torque and road speed from the rollers and calculates power and rpm from there. units like the G-Tech need to jnow the weight of your car because they only acceleration. If you know acceleration and weight, you can calculate the accelerative force and from there get power. They're nowhere near as accurate though.

pp13bnos

iTrader: (1)

I think that 90% of the people with n/a Rx-7s would be shocked to realy see how much hp they are realy putting down. I know i was.

Samps- What kind of mods do you have to your car?

I say go ahead and dyno it.

CJ