My dyno results...
 

Okay, i'm still at the dyno right now, i will post up my graph later.

Tuner - Shawn Church @ church automotive in Los Angelas Ca.
Mspnp

at 14 psi on 91 pump gas..I made 275.9 hp / 241 trq. on the dynapack
20psi on 110 octane. - made 302.3 hp / 291 trq.

wanna thank diy autotune / flyin miata / bell engineering / Andrew Kidd aka Savington-COPS.

:eek5::eek5::eek5::eek5::eek5::eek5::eek5::eek5::e ek5::eek5::eek5::eek5:

can't wait to drive home..8 hrs away..

jeez nice numbers! should be a blast.

its very very scary....no traction at all....

Is the torsen holding? Lol... at that point I'd be worried about the diff...

nice numbers

now go own everything you pass

no more racing from the dig. LOL!

Seriously impressive pump gas numbers. I bet you didn't utilize 10-12 octane points of that 110, though. ;)

Realistically though, what's a guy got to put in his miata to have a sturdy reliably 275 rwhp handling diff??

Not bad

ger u ass you are to fast.

Sleeper- I think you've hit the manifold wall on high boost given the disparity between tq/hp vs. 14psi. It would be interesting to see your dyno curves.

I missed what turbo you're running. I'm going to assume GT2560 though.
Great numbers, I want dyno time.

"manifold wall" ??

Design limitations of stock manifold...

Edit: Just like "max boost" is a very technical term, so is "max flow."

which turbo?

At 20Psi you should really be making more power than that. Somewhere closer to 360-375hp, but there may be some restrictions holding you back.
Do you still have the stock exhaust?
How conservative is your timing up high?
A/F too rich?
What injectors are you running? 550's run out of steam around 300hp

I agree someone needs a BEGi manifold.

I too am surprised you weren't seeing Z06 smoking numbers on the second run.

awesome numbers.....DAMN IT NOW I WANT TO MEET UP WITH YOU AND YOUR LOCAL MIATA BUDDIES EVEN MORE:D

As a former differential destroying champion, I feel like 2 things are going to destroy a differential:
A. Launching, especially with wheelhop
B. An aggressive clutch

Coming from the S2000 community (Honda sourced the S2000's differential from Mazda, as I understand it the S2k diff is basically a beefed up Miata diff), some people are running 500whp without any problems, others have blown diffs at stock 200whp. It all depends on how you treat it, just b/c you're making 275whp doesn't mean it's going to explode.

how does a dynapack compare to a dynodynamics?

Hmmm seems low to me at high boost. You running a 2560?? I'm looking for 300rwhp at 15psi on my 2871 and a fully built motor.

Let's see some timing and fuel details here.

Still 300whp is nothingto shrug at in a miata!! :)

Just out of curiosity, did you log any of your dyno runs (using Megatune)? If so, I'd be interested in seeing them.

275whp from a built 1.6 with a 2860RS at only 14psi is low? :bang:

kick ass numbers man GJ

I don't know what kind of mani from begi but i have the s 3 kit from bell.

i didn't get any data log - he didn't even bother using that..

I am happy about the tune. I don't know why i didn't make more power at higher boost. my set up is begi s -3 with gt2860rs. tune with open exhaust...

I will have to say that this guy is amazing and knows exactly what he's doing. It took me no more than an hour to tune this car. after getting it off the dynapack he also street tune it. He knew exactly where everything was on on MS.

I will post up the graph tomorrow also will post up the spark map and ve table...

rc550cc

260whp/252wtq will roll c5z's...not a c6 though. :giggle:

The point missed by so many is probably because there are no dyno sheets. On high boost he's got a torque number from a 1.6 that would yield way high hp numbers - like another 50whp at least. I bet the intake manifold is reaching it's limit right around the torque number and as the rpms continue upward from there, the hp curve does not.

I bet you're right.

Need more data. I didn't even know he had a 1.6 or a 2860rs until it was mentioned by someone. His sig is a little bit vague.

needs more visuals.

I'm talking about their intake manifold. They just developed it with the guy posting above ^, and from everything I've read it should really open up the potential past the 230rwtq mark.

I'm no expert, and without seeing where your torque is dropping off it's hard to tell, just an internet hearsay of a guess.

If you're running the S3 kit then I'm sure you know enough about Corky's expertise and the quality of their parts.

I'd also like to see a log...I'm at 72% duty at 261/252 with 550's on a walbro 255. I'd also like to see some AFR action and a spark map. I bet the race-fuel is helping your cause a lot. I'd like to see what it does on pumpgas.

Once I figured out wtf I was doing on the dyno, it took me about 1-hour to get everything to where I thought it was right. With that experience, I think I could get a car tuned on the dyno in 1-hour.

How's drivability?

Missed the part where he was on a 2860 and a 1.6 Sav, and I was only commenting on his high boost run.

But thats a fuckload of torque first off for a 1.6 and secondly considering your power numbers..

Lets see those dyno graphs!!


-Dean

give me some time..i need to find a scanner.

Hustler... the car drives like a factory car!

I want to see the AFRs and spark advance table in your "boost building" cells. You have their standard cast manifold, right?

Use a digital camera. Put the sheet on the floor at your feet, use the flash, and don't aim straight on- just a little off so the paper doesn't reflect flash right back at the lens.

I really think it it a combination of using 550cc injectors and possibly a stock fuel pump. I would also like to see the AFR table, but my guess is that you need some 750cc injectors and a Walbro255HP pump to actually see numbers where you should be at 20Psi.

275hp out of a 1.6 at 14psi is great though. My car has around 300hp and I spin my RA1 in second gear in a straight line if i get into it just a little. Very fun, but you have to be extremely careful.

I was in 3rd gear on concrete with 225 rs-2's and thought I blew up the rear end or tossed an axle because the car was pitching sideways...turns out it breaks the tires loose in 3rd below about 60* ambient, lol. AutoX-ing this car is a real challenge, but a crowd pleaser.

Our cars rule, lol. I really want to see what these cops do to whp and torque.

My RA1 are 245's and i thought they would stick with anything pretty much, but man i was wrong. i am about to throw in my 750cc injectors and crank this bitch up. I figure it will drive the same as it does now and have enough room to beat that C6 Z06 in my neighborhood that the guy keeps laughing at my "cute little 4 banger".

he has a walbro 255 upgraded fuel pump in the car. this man has been working on his turbo miata for over a year. when i first met him he was stock now he has all the right parts to make good power. i helped him most of the time including the 6 speed swap and other fun turbo stuff. i would agree maybe he needs bigger injectors and a new intake manifold to make more power even an external wastegate would help but on 91 pump gas he made great power...

I another person who would love to see the maps Shawn came up with for your setup. As they will never be plug and play for any bodies setup but yours... its more of a reference from a well known quality tuner.

Post up the maps puhleaze.

Yea, cast mani.

Hey Nick, if you can please post up my maps for me...i do not know how to post it up..LOL! if anyone wants my ms files hit me up with an email...i send them to you.

thanks tony.... its because of you...you got me addicted to boost!!!!!:crx:

I use to have this crappy white miata with red rims before I met this guy..:giggle:

I'd like to see them :). Didn't see an email link included in your profile.

splitime@gmail.com is mine :)

email sent

Want me to post them up here for you?

please!

Here you go :)

Why did your dyno operator input 5.10 as your final gear ratio? If you have the 6-speed and the 3.90/3.91 rear gear your available ratios are "14.7:1 8.87:1 6.43:1 4.91:1 3.91:1 3.30:1." A 5.10 doesn't make the list.

That will render the data useless and inaccurate, except for tuning from one run to the next for the net changes.

You could be making more or less power than the chart says depending on what gear the operator was in during the pulls.

That sucks. I hate people who don't follow procedure when that's what you pay them for.

Maybe you can get him to redo it correctly.

That might explain the high torque # in relation to hp.

This seems like a good chance for me to be educated. If you are measuring torque and hp at the wheel and plotting whp and wtq what does it matter what gear ratio you are assuming?
(I am still relatively new to all this so please point out what I am missing here. It seems like he is directly measuring the figure of merit he is plotting, namely performance at the wheel, does the gear ratio play a role?)

The Dynapack measures torque and calculates acceleration, I believe (unlike an inertia Dynojet, which measure horsepower and calculates torque). The torque measured at the wheel is a huge number, since there's a 4.10:1 reduction at the rear end. You divide the wheel torque measured by the rear end ratio (and dyno in the 1:1 gear) to get the torque measured at the end of the driveshaft. If the 5.10 number was used, his numbers would actually be artificially low.

wow, we got some smart people here...good thing i posted this thing up...so what am i really pushing in hp?

I had assumed that they were just measuring/plotting hub torque and using the hub rpm to get wHP (and plotting it against engine RPM). I gotta do some reading.

It could be done that way. The hub RPM would be lower than expected, which would make the power numbers low. I wish they would plot the damn torque and HP curves on the same chart.

fucking afr graph, please.