My first dyno!
- Thread starter Rush
- Start date
No, they don't. When was the last time you saw a dyno operator enter in gear ratios on a dyno?
Dynojet is an acceleration type dyno. It uses a math formula to arrive at a hp calculation based on the roller weight. Anything far off from 1:1 ratio the engine torque is multiplied and the #'s will be skewed.
Also, like I was saying the ratios on our car from 3rd and 4th aren't significantly off from 1:1, so you won't see much difference dynoing in either gear. However, 4th is the gear closest to the 1:1.
3rd: 1.310
4th: .97
Dynojet is an acceleration type dyno. It uses a math formula to arrive at a hp calculation based on the roller weight. Anything far off from 1:1 ratio the engine torque is multiplied and the #'s will be skewed.
Also, like I was saying the ratios on our car from 3rd and 4th aren't significantly off from 1:1, so you won't see much difference dynoing in either gear. However, 4th is the gear closest to the 1:1.
3rd: 1.310
4th: .97
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fatti03msp
Contributor
- :
- 03 MSP & 91 RX-7 & 00 1500
Get rid of the cat lol, i had a shop make me a flanged 3" mid-pipe for about 175, so when inspection time came around i could just swap on the catless midpipe with the catted vibrant midpipe.
Just a suggestion, not sure if you have emmission in your neck of the woods.
Just a suggestion, not sure if you have emmission in your neck of the woods.
How did your graph look, though? Hopefully not nearly as seizure-ish as mine?
That's one of the reasons why I didn't say anything when I heard they were pulling in 3rd .. also cause I had no clue about the ratios, but like Sam said, doesn't look like it'd make that much difference.
I <3 my license plate .. except for when I get those stupid people trying to sound out the 'MSP' part into some word that doesn't exist!
Yep, we have emissions here .. and they're the only reason that cat is on there. But I'm honestly not that concerned with the HP I'm losing with it in the exhaust system, I'd rather just have it all good to go so that I don't have to worry about swapping anything out.
.. Anyone have any ideas on what happened with my 2nd run (the red one)?
fatti03msp
Contributor
- :
- 03 MSP & 91 RX-7 & 00 1500
Could it possibly be a blip of fuel cut maybe i know your boost is low but maybe the other stuff is really making you run rich, or you just hit a really really rich spot for some reason.
I know that the fuel cut is painfully obvious from the other two runs (you can see where it hits between 3.2 through 4.2 RPMs, give or take) .. but I just dunno WHY it hit so viciously in the second run, versus the first and the third.
Effin' crackpotted car.
justinlansdale
Member
- :
- 2003.5 Mazdaspeed Protege
thats not too far off, i put down 152whp/185tq with just an injen CAI and a leaky greddy SP2 exhaust at stock boost. with a FMIC, exhaust, and a decent tune you should be up close to 200-ish.
nice numbers rush!
Not too bad of numbers, should provide a good baseline. Tuning should provide some great results. It will be cool to see what you come up with. On my Microtech, I was able to tune another 20hp out of my car! The map I started with was unbelievably rich though.
Also your car looks FABULOUS!
Also your car looks FABULOUS!
94 octane .. It was about 60 degrees and I'd guess around 60-70% humidity. My car REALLY hates humidity, so that might've played a small part in making the graph even worse .. but prolly not too much.
I know, I knooooooooooooow! (sad1)
JDM Sam shipped my Unichip out this morning. (cabpatch)
