This weekend we are doing a twin turbo setup on my freinds 3.1 Camaro, and it has speed density system, what would be the ill effects of running boost on such system?

We will be using 26lb injectors and just want to run 5psi of boost at first. Can the Computer compensate for the extra airflow? Or do we need a custom chip or something?

In the future we plan on running 10spi or higher, what would we need to do in order to allow the computer to handle this?

Or should we just convert to MAF?

 

The ECM will not recognize any manifold pressure over 100KPa absolute. With the 26 #/hr injectors the engine will run sloggy rich, if at all. That is a 61% (or so) increase in fuel.

Does this vehicle have to be emissions legal?

RBob.

 

no emmisions, just visual... and not until jan 2005.

We are planning on it running rich until it hits boost, where it should probably be fine after that. We also have an AFPR, so is its funning too rich we can lower the fuel pressure.

This is all until we get either a piggyback ecm or a custom chip.

 

No emissions, then use the $58 mask in the current ECM and swap the MAP sensor out for a 2 bar unit. The $58 mask was used in the Turbo Sunbirds and SY/TYs. Tuning will be required. Some re-pinning of the ECM harness connectors will be required.

If you don't want to tune a chip then put the stock injectors back in and use an FMU.

Closest to emissions legality would be to use the current ECM with the '89 GP turbo mask, $8F. Will need to swap the EGR for the same that they used. Again, unless using the same injectors, cam, and turbo as the GPT chip tuning will be required.

RBob.

 

That's the nice thing about the MAF system... a little recurving, and 14psi is handled like a champ.

 

cant we just get someone to make us a custom chip? like doward got funstick to do his?

if not, we will just use MAF since its better anyways.