Power Figures Dyno Chart

[Abo Bob]

I checked all the worksheets but didn't see any boost. Am I blind?

Ben - what tyre sizes?

[Bass Junky]

I reckon the rpm numbers are a littl out as my peak rpm is more like 7800 rpm, not 7500.

Just the speed, not RPM

[2BNVS]

i got 265/30/19 on the back

i know it would be out but i dunno if it would be that much...good to know though

ben...

[Abo Bob]

i got 265/30/19 on the back

i know it would be out but i dunno if it would be that much...good to know though

ben...

I don't think it is out based on my calculations (ok a spreadsheet did it for me.)

Also see Bass Junky's post above yours.

My latest dyno sheet has rpm so yay for that. I heard the reason why most of them have road speed is because when they buy the dyno the rpm thing is an option which costs too much so people think cost/benefit not worth it.

[WogsRus]

well somone dignose my dyno chart, cos i put in my figures and this is what i got.

I have a 3" exhaust and dump, high flow pump, SAFC II, plugs gapped at .65mm, HKS pod, FMIC, stock turbo,

I made 187rwks at 10.2 psi with boost spike, my boost controller shit itself.

I have crap coils, and i am about to get new ones, but as you can see, i make a lot less power through the rev range and then bag, it goes of it's nuts. What the hell can it be, the coils, the tune what is it. and how do i fix it

[Abo Bob]

well somone dignose my dyno chart, cos i put in my figures and this is what i got.

I have a 3" exhaust and dump, high flow pump, SAFC II, plugs gapped at .65mm, HKS pod, FMIC, stock turbo,

I made 187rwks at 10.2 psi with boost spike, my boost controller shit itself.

I have crap coils, and i am about to get new ones, but as you can see, i make a lot less power through the rev range and then bag, it goes of it's nuts. What the hell can it be, the coils, the tune what is it. and how do i fix it

Dunno if this is the right thread for this but was it misfiring on the dyno?

[WogsRus]

nope no miss fire no nothing, the AFR was almost spot on and constant?

[Lithius]

I put my 2000 model R34 GTT dyno results in there too... thought i'd upload the altered database so more ppl can add to it and compare.

Not sure if I updated the right database, so many different versions in this thread.

Edit: took out my corrupt database

[Abo Bob]

I keep getting the compressed file is invalid or corrupted but I can see your graph.

I've added to the previous version.

It's interesting to compare Bass' and mine, basically the only difference is I'm using more boost.

Power_Curve_XL_Sheet.zip

[Bass Junky]

Abo. We could be twins!

I've added your numbers to it now also.

Lithius and WogsRus

Please post your numbers raw in the thread and I'll add to the main chart.

[Crimpage]

Anyone want this turned into a PHP / MYSQL page? Would it get used enough?

Could have the option to attach a JPG of your actual Dyno as well... Then maybe tickboxes like:

Compare:

Bass Junky

Abo Bob

Lithius

So that when there is a heap in there its not just a huge mix of graphs...

Let me know.

Cheers,

Dave

[WogsRus]

55 60 62 65 68 70 73 75 80 85 88 91 95 98 99 102 104 105 108 107 110 107 108 112 115 128 135 148 169 175 183 187 182 180 180 180 182 183

2143 2250 2357 2464 2571 2679 2786 2893 3000 3107 3214 3321 3429 3536 3643 3750 3857 3964 4071 4179 4286 4393 4500 4607 4714 4821 4929 5036 5143 5250 5357 5464 5571 5679 5786 5893 6000 6107

60 63 66 69 72 75 78 81 84 87 90 93 96 99 102 105 108 111 114 117 120 123 126 129 132 135 138 141 144 147 150 153 156 159 162 165 168 171

[Bass Junky]

Crimage.

I would LOVE you to put something together.

We could add it to the RB25 Dyno Results page.

I've seen one with a couple of hundred of users before. Very pro!

[Abo Bob]

That would be awesome if you can pull it off Crimpage.

Bass - I thought we were already twins. My 0.25 lower CR and your lightweight flywheel are the only real, possibly relevant differences.

[Abo Bob]

Oh and I still couldn't see any where to put in the boost graph. If the new one had that feature it would be really good too.

[Willo]

Does anyone want a calculator for theoretical speed based on tyre size, rpm, gear ratio and final drive? It might be useful for explaining differences in speed between cars at the same rpm.

[Crimpage]

Are the RPM steps the same every time or would you have to go through and fill in:

RPM - RWKW - Optional: PSI & AFR

for each step?

I could host it on my site, and I only use if for email and I have like 20gb storage and 50gb / day data transfer. But I dont really have an efficient way to lock it down. I can integrate it into the forum if it was hosted on a section of SAu, then you would have to be registered on the forum to use it...

[Willo]

You'd fill in tyre size, gear used, ratio and final drive, and a series of RPM values.

[Abo Bob]

Is it possible to make it so that you can enter either road speed or rpm? I have a dyno sheet that is neatly broken up into 500rpm major and 100rpm minor increments which makes it easy but most people have ones that have road speed.

I didn't quite understand the earlier discussion about converting it so I can't really comment in that regard.

AFR would be interesting but I think not as useful as boost and power.

[Abo Bob]

To clarify, the steps are not the same for every sheet, so something that was able to extrapolate for missing values would be awesome but I fear I am creating a monster with this comment. Perhaps near enough is good enough. That's how I entered it in this time cos the rpms are not the same as on my sheet, I just used the one closest.