Tuning stock corvette?

[2ktransam]

I just bought a 99 c5 that has catback, gutted cats and intake. I'm throwing it on the dyno tomorrow to get a baseline and do a little tuning before I start modding. I'm used to tuning my 402 Firebird and turbo truck so I'm not sure what you can really do with something that is stock. Should I just work on AF and timing a little or is there anything else that helps? I'm sure the gains won't be much but I'm thinking these things run pretty rich from the factory. Thanks

[Sid447]

As a suggestion,

Have a look at the ZO6 tune files from holdencrazy.com
There will be parameters from these files that may help you.

Though bear in mind you have the LS1 intake and injectors.

[2ktransam]

As a suggestion,

Have a look at the ZO6 tune files from holdencrazy.com
There will be parameters from these files that may help you.

Though bear in mind you have the LS1 intake and injectors.

I have looked through a lot of tunes and the 99's already have extremely agressive timing tables. The stock table is set to 28 degrees at wot except for a dip at peak torque. I'm going to play with that a little on the dyno but I think the af is going to be the best bet.

Thanks

[joecar]

Check that fuel pressure is stable thru out RPM range.

Get the VE and MAF tables BEN corrected (i.e. measured AFR = commanded AFR); then get PE table dialed in for best TQ and HP.

[joecar]

If it has the A4, then also tune shift feel, set:
- shift shift time tables to 0.2s,
- increase shift pressure tables by 25%,
- decrease shift torque reduction tables by 25-50%.