Dub Dyno

It's a great way to get a base idea of different benefits of potential mods before spending your money and time on parts. Love this app.

Wish there was more cams to choose from as well as open headers head port designs. But dam accurate

Must have before you buy the wrong cam or to big of exhaust... Also can you add a better carburetor selection to include progressives?

Needs more parts to chose from cams and heads would like to see 050 heads and more cams

Click assemble motor and it crashes.

Please add more carb choices. A Weber progressive, baby dels, icts etc...

App seems cool, but needs forced induction options.

Awesome app. Spent many hours doing different combinations for various engine builds. Wish there was a few more cams to choose from though is my only critique but excellent app.

6 months later, program crashes now every time i try to assemble motor.until now - brilliant,

Limited inventory on parts.. over all good though

It's a fun app to play with, wish it had forced induction options but fun none the less, found my new favorite cam with this app as well.

6 months later, program crashes now every time i try to assemble motor.until now - brilliant,

Needs to have the option to choose smaller piston & cylinders like 83mm etc, type of intake manifold, cnc porting etc. As I said. Good app but has a lot more potential if the creator puts in som more time for more combos and parts! All the info is on the internet already!

Needs to setup turbo builds with turbochargers and superchargers. There real big now for real power builds

Worth every penny. Wish there was a PC Version so I could look at more than two sets of data at the same time or export to a spreadsheet. Still a 5.

This app is very useful. When I built my motor I did hours of research on what compression ratio to use for my engine and this app tells you what to use and what octane you will need! Amazing! Just needs more cams.

When specing my VW engine I did a lot of research on parts to get the hp and tq curves I was looking for. This app really helps take a lot of the guess work out of the process.

You can play for hours to get the best result for your car requirements, without spending a penny on parts. Found out my motor, once assembled should put put 120 bhp. How about an app for be be vw gearbox ratios.

I've been waiting a long time for an app that could help me pick my engine parts and this app does that for me. Good fun to see what a large range of engine parts can do. Good layout and the charts are way cool. Works on my S3 LTE and my Nexus 7.