"The Dyno kicks some serious !%*&^. All my
friends pile over every Sunday to watch Winston Cup and after the race we
are on my computer fighting for dibs on the Dyno!"
"I love playing with the Dyno and DragStrip…I just thought I’d let you know that your work is appreciated!"
"I have been building street engines and drag
engines for 40 years, and it was always a [guessing process]. But now with
the Dyno I know it's right. Since using your software I have managed
to put together some very respectable street cars. Some have even made the
magazines. I print out a copy of a dyno test for my files and give the
customer a copy also, reducing a lot of paperwork. I also use the Dyno in
conjunction with the DragStrip Sim. This really helps set up a car and
get the most out of any engine buildup. Thank you for making my job easier
after all these years."
"I really enjoyed your Dyno. It was great to
use to help decide on motor combinations for my dirt-track car and also to
input in the winning motors that I have been building to compare the power
and torque on the computer and how it coincided perfectly with the results
I experienced on the track. I truly enjoy your software and I look forward
to new products you will produce. I’m sure they will perform equally as
well. Thank you."
I am very impressed with the results from the
Dyno. I have been building performance engines for a number of years
and have expended a large sum of money just to find out that one
combination or another just doesn’t work. I am very fond of this program
because it allows me to "test" every conceivable engine combination for a
variety of engines with no expense or headaches. You have a wonderful
product and I wish you much success in the future."
"I just viewed your [How To Build Horsepower]
video tape. You did a very nice job. The [individuals presented in the
video] did a great job explaining how much money and time can be saved
[with simulations]. Their stories really drive home the point!!! I’ve been
at this stuff for 35 years and I learn a little bit more every day."
"Hi. I can’t tell you how impressed I am with
the Dyno. I have played with it everyday since I got it at Christmas."
"Thanks for the fine software."
Carl And Kathy Engel
"The Dyno gives me the versatility that I
wanted. While I have only spent a few hours with it, I think the Dyno
"This is a great product. I have included it
as part of the Auto Shop course that I teach. Keep up the good work."
"I have just started using my Dyno, and I
must commend you. Dyno is a remarkable enhancement to an already great
product. I work mainly on offshore boat engines and Ducati motorcycle
engines. The increased flexibility in airflow entry and the wider range of
modeled engine components makes [it] a breeze! I can only wait to see what
you have in store for the future!!!"
"I’m playing ProDrag RacingPCE and I find it
to be excellent. I can use the results from the game in real life. I use
the game to verify changes I will be doing to my car and all my passes are
within 1/10-second or so when compared to my actual track time slips."
"I am the president of the Penn College
motorsports association. Last year you guys donated version 2.8 of your
engine Dyno software to us. We fell in love with the program and use it in
our motorsports planning and even in our performance class."
"I would like to say how pleased that I am
with your products. They work great with no problems. I started off with a
386 computer and I now have a Pentium and they work super fast. Thanks for
a great product."
"I love your DeskTop Dynos book and software.
I’ve owned Dynomation and Engine Expert for years, but I love the ease and
speed of your program. Congratulations to all your staff."
"I used the DeskTop Dyno to help select parts
for a 400cid smallblock Chevy engine for my old Blazer. The engine runs as
expected; the Blazer has a new lease on life. I had fun experimenting with
different parts and I have saved money, too."
"Thank you very much for writing the
Dynos book. For me, it’s the most informative book I’ve ever read in this
field. Please extend my regards to everyone who participated in writing
"Thank you for the products and service that I
have received in the past. I am more than satisfied with everything I have
purchased. Thank you."
"Let me say that the Dyno is a magnificent
piece of software. I have spent hours testing parts. Now that I have it, I
wouldn’t take a $1000 to go back to my old way of browsing 100s of
magazines trying to find the best combinations of parts to make the most
usable horsepower and torque. I know you probably get hundreds of messages
from satisfied customers like myself, but I just wanted to say "Thank you"
for making my job easier."
"I enjoy your program very much. It has been
very helpful in building my 450hp smallblock Chevrolet. I am very new to
computers and have had no problems using your software. I have been
building smallblock Chevys for 40+ years and your Dyno software has made
me realize that I wasted a lot more money that my computer and programs
have saved me in [just] the last buildup."
"I would like to say that your Dyno engine
simulation has already helped me verify selected performance parameters on
my dual-Weber, roller-cammed, cc OHC Ford engine used in our
short-track paved oval Pro-Four. Certainly saves time on the dyno, saves
hardware, and track time while being able to selectively narrow the choice
of changes to test. My only personal problem is being able to convince my
spouse why I need to sit at the keyboard until 2am ‘playing’ with this
"Your Dyno and DragStrip software have saved
me a lot of time and money. I was about to purchase some parts until I ran
your software and found they would have had a negative effect on
performance. I now have a quicker car and didn’t waste the money on
mismatched parts. Thank you."
"I am a registered owner of the Dyno and
DragStrip simulation programs. These are great programs. I can’t believe
how close they are to actual ‘real life’ performance. I am very
"The programs offered by your company are very
entertaining as well as helpful. The ability to transfer data between
program like the Dyno and DragStrip is a great idea. I hope you will
pursue this further."
"I absolutely love this thing. My Wife gave it
to me for Christmas. Thank you and her."
"I have recently viewed a copy of your Dyno
[engine simulation] and was just blown away by its usefulness in the
racing community. I think it is the best thing to come along [for] engine
building since roller lifters and forged pistons."
"This is by far the best automotive web site
that I have EVER logged onto. No wasted bandwidth here. I also like how
you handle the technical information. You shoot straight. You convey the
information without condensing. Great work, gentlemen!"
"I really like your [engine simulation]. I
have ‘built’ several engines out of magazines and have come very close to
their published results. You could save some serious dollars with this
"I love the DeskTop Dyno. Our race team has a
Sprint Car that had a little trouble last year. We have already got a
combination ready for next year thanks to you. Thanks for saving us some
money on trying out parts."
"I have really enjoyed using the Dyno [engine
simulation] to dial-in engines. The software has accurately predicted what
is and can be with minor modifications. Dyno has offered hours of
entertainment to see what the current engine in our ’73 Camaro can do. We
are looking forward to purchasing your DragStrip simulation."
Jeff And DeAnna Williams
"Used your Dyno to build a 383 Chevy. We put
it in a 1977 Malibu Classic (car weighs 4100lbs). It runs in 12.90s. Nice
"I received the Dyno. It works fine and the
Cam Math Calculator is really helpful. These products are a real service.
Please include my name for any upgrades."
"Hi! I bought your Dyno program for my husband
to try to get him involved with our PC. Let me tell you, I now have to
schedule my time with the PC, and I still have to push him off the thing.
He is having a great time with this program! It’s not uncommon to find 2
or 3 guys in ‘my’ computer room. Keep up the good work and the reasonable
"My copy of Desktop Dynos (the book) arrived a
couple of weeks ago, and I must tell you: I’m IMPRESSED! This is, by far,
the BEST technical treatise on the principles of operation of the
Otto-Cycle engine I have ever seen. And it is written in cogent, concise,
clear language approachable by any dedicated enthusiast, racer, or
engineer willing to make a modest effort. This book is OUTSTANDING, and it
should be required reading for every serious motorhead and/or racer. As
for the software, I have made hundreds of dyno runs on my own project and
have learned an enormous amount of valuable information. The Dyno was the
best forty bucks I ever spent. The DeskTop Dynos (book) would have been a
bargain at a hundred bucks; for $19.95 is was a steal. Good work, guys!
Your products are way cool!"
"...Your DeskTop DYNO software was
instrumental with our winning of the 1999 PRO 4 championship and the
breaking of the R.A.R.C. (Regina Auto Racing Club) track record. I have
also used it to design a 400HP 350 for my daughter's 82 TA, which is still
ruling Regina's streets..."
Daniel (Preacher) Lutes
"Just wanted you to know your Dyno software
has saved my and my customers a considerable amount of cash and heartache!
Thanks. Looking forward to more!!"
"Your computer software is awesome! My friends
and I use it quite often to test different combinations on our race cars
and street cars. We campaign three different cars, two of which use NOS.
So when I got your update offering NOS, we were thrilled. Thanks much."
"I like your Dyno program and think that it
has been helpful to me in my vocational class. I has made it easy to find
out how to get the most horsepower or torque. I would just like to say
thanks to you people for making a program like the Dyno.
"Received my Dyno software upgrade. This thing
is awesome! Especially like the 10,000rpm capability. This allows us to do
some serious designing. The 'Calculated Power And Engine Pressures'
display is neat, too."
"This program is more fun than a big-block
Chevette! This program has provided hours of fun in the first few days. My
son and I have explored engines from works-in-progress to a 12-cylinder,
7-inch bore and stroke Monster motor. Keep up the good work."
James Robinson, Jr.
"I have just finished reading the book DeskTop
Dynos, by Larry Atherton. I am writing to say that it is an absolutely
outstanding overview of the internal combustion engine. I learned more
from this book than I ever could have by reading the high performance
magazines. Also, the Cam Math Calculator is an invaluable addition to the
"In the short time we have had the Dyno
package, we have realized that it will be a valuable asset to our
engine-building service. Being able to show customers printouts of
estimated horsepower and torque before engine building starts is a great
"Thank you for producing an enlightening
engine program. I find it very useful. Thanx again."
"This software program you’ve developed has
made BELIEVERS out of many, many racers around the western Wisconsin area!
Keep up the good work!"
"The improvements [you] made with the upgrade
version are excellent and [it[ makes the program much more user friendly
and accurate. I have also purchased your ‘Using Computer To Build
Horsepower’ video, and this is an excellent product, also."
"Just unpacked the Dyno and I am having fun.
Please let me know when the DragStrip will be available; I will purchase
[it] on the spot."
"I just purchased the Dyno and I must admit,
it is much more than I expected. I have a Bachelors and Masters degree in
Mechanical Engineering and have been tinkering with cars and engines for
over 30 years. When I read about the program, I thought it would be a
‘toy.’ But I figured, I’ll waste a few bucks, and at least I’ll have something
for my 17-year old son to play with. But the Dyno is really a very good
program and I am pleased with it. Thanks again for a great product."
"I would like to say that I have been very
impressed with the Dyno software. The accuracy of this program is quite
amazing. I have run many ‘dyno test’ of actual engines and found the
results to be almost exactly those of the real engines. This program has
already helped me pick the perfect cam for my truck. I was very pleased
with the results. Keep up the good work."
"Thank you for producing good quality
materials. I and my students are getting many hours of enjoyment from
them. These programs are very motivating for all of us. Thank you."
"Your new program represents quite an
improvement over the original version, an excellent program in its own
right. Great work."
"What a pleasure it is to use a program that
is user friendly and accurate. I recently dyno tested an engine and it
matched the prediction within 1hp and 20ft/lbs torque. I look forward to
using your program."
"Found this program to be addictive. Have
almost sent myself mad trying all kinds of combinations."
"Just a quick note to give kudos on the great
"I've been trying to really 'flex' both
Dyno and Drag. I've found
both to be of tremendous help. And
I've probably learned more about engines between your software and book
than anywhere else.
ProRacingSim, LLC., is a division of the Comp Group, 3406 Democrat Road, Memphis, TN 38118
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