macsperformance

Hello everyone...

I am new to the forum and wanted to start posting by trying to add some positive stuff to the forum.

I made a little quick video of Steady State Load Cell tuning of a Base Fuel Table. I hope everyone enjoys!



Here is a link to the site:

http://www.forcedfours.com/viewtopic.php?t=169





thank you
Chris Macellaro

enzo250

Loving that dyno i bet!!

Once you use a dyno dynamics you'll never want to use any other dyno.

macsperformance

Yes to be honest it is one of the best tuning tools out on the market. It makes calibration work very easy. I have had the opportunity to use several other brands of dyno's on the market and a Dyno Dynamics is truly a top notch machine.



Enzo.... your screen name looks familiar. I may have seen you at one time or another on different forum. If you are the same gentleman, Andrew the owner of the shop that I filmed the video at mentioned you a few weeks ago to me.




thank you for your comment
Chris Macellaro

Claudio RX-7

iTrader: (1)

This is exactly what Ben Strader from EFI Collegue did in the EFI101 seminar i attended to demonstrate the practicalities of steady state tuning and how its the best way to get the engine dialed in perfectly. And of course the use of a loading dyno instead of an inertia dyno is recommended.

enzo250

Yes... It's Me

macsperformance

Andrew was very happy to talk to you. He told me a lot of good things about you and what you are doing. If I am in your area in the future I would like to come by and visit with you guys.





Chris Macellaro

enzo250

Np..

SomeGuy_sg

Interesting Vid to say the least. I did like the comment about putting out a dvd for the noobs like me ..haha.. Althou it would be hard to tune it myself here, cause most of the "performance garages" (and i use that term very loosely) here only offer package tuning. Not sure what kinda dyno they are using thou.

gorockrx

Nice Vid...Good Info....Awesome Dyno...

Where is your shop, and where is that dyno?

macsperformance

The shop is located in Calhoun Georgia. I do not own the dyno. The shop is called Dyno4mance and the name of the gentleman that runs it is Andrew. The shop is located close to my home and I use it as my primary dyno for tuning all of my customers cars. Here is a link if you would like to know more.....



www.dyno4mance.com






thank you
Chris Macellaro

SomeGuy_sg

Keep us informed about any more videos

gorockrx

Nice.....Very Nice!

Free bump too...

onefastrx7

I cannot believe I can hold my 13B at 30psi and 13000rpms for 10 seconds to tune the cells around the values.
This seems to work on mildly modded cars, but high horsepower/high boost/high rpm engines - I think the engine will be toast.
I understand that with this method of tuning you can squeeze the last drop of power out of it. But is it worth it? In the example above, my car would never stay in that cell for such a long time...

So, Dyno Dynamics is an awesome dyno, if you are using the autotune option on the Autronic ECUs

enzo250

You have to use common sense to tune. It's obvious your not going to hold a rx7 full throttle at 30psi for extended periods of time but a few seconds wont hurt. And you don't have to autotune it, you'll manual tune it.

I tune marine engines on an engine dyno at full throttle 6500 rpms for over 10sec and it doesn't go toast! This is at over 1200hp.

SomeGuy_sg

Mm....i was curious about one thing . How do you set/find the rev limit for an engine that has been modified? Be it piston or rotary. With modification, it would raise the rev limit some what. How do you know by how much ?

macsperformance

Not to over simplify my answer but when using a chassis dyno on most not all but most.


I look for the power to start falling off... when the power starts to go back down hill or stops climbing there is no reason to turn the engine any faster if it does not produce any more power.


On allot of turbo motors the power will climb until the motor lets go. On these vehicles it is kind of like a common sense thing and knowing the limitations of the engine being tuned.



Also my customers normally tell me what they would like to turn there engines to and if I feel the RPM limit is within reason I will agree after some history of the modifications to the vehicle.


I also use a piston speed calculation that tells me how fast the piston is traveling in feet per minute. But the generally does not apply to my Rotary guys.





thank you
Chris macellaro

SomeGuy_sg

Mm....so on turbo engine , the rpm limit is more of a guessing game ? Wow, i did not know that .Seems kinda dangerous to me