Monster Garage Cheats

In the garage type in flashback then click on the lightbulb

Enter one of the following codes in the garage, then
click the light bulb to activate the corresponding cheat function.

Code
$1,000 more moneycheat
Go back one day flashback

To roll time back a day type in flashback and click on the lightbulb to activate it CAUTION: do this after you have recieved all the parts and have had your crew build or redesign everything

While in the garage, type "moneycheat" then click on the lightbulb to get an extra $1,000.