Originally Posted by 636Racer

There are other means of correcting fuel needs instead of spending money on high dollar stand alones and/or piggy backs. All you'd really need is an aftermarket fuel pump and an adjustable fuel pressure regulator, maybe higher flowing injectors if you want to induldge yourself. One of the best Wide Band logging systems I found is the DynoJet Wide Band Commander, it's cheaper than more sophistacated software/hardware wide band systems. It's commonly used on superbikes in conjuction with the power commander, because bikes are super sensitive to air/fuel mixtures. I've seen them used on a few cars as well...so its versitile. So with those items, just setup your static fuel pressure regulator, data log from your Wide Band, and make fuel adjustments from there with just a twist of a screw give or take a psi or two.

Originally Posted by MRC Motorsports

This still does not give you control over your A/F ratios and timing and would still cost you several hundred dollars by the time its all said and done and yeild very little results IMO.The only way to extract good power out of a NA Z or G is to tune for it.Two years ago we experimented with a piggyback similar to the UNI-Chip and were able to tune out NA Z to almost 300WHP.The car ran 13.1' with only headers,exhaust,CAI,pulley...Tunning is key,but bumping fuel pressure is not the way to do it,all it will do is spray more fuel through you injectors at an unkown and unctroled ratio as opposed to being able to adjust the injectors puls widths and scaling along with timing advance...Just my .02

Originally Posted by 636Racer

it's making up for whats being lost. besides, oversizing injectors and setting the afpr to full blast would be dumb.

Originally Posted by MRC Motorsports

This still does not give you control over your A/F ratios and timing and would still cost you several hundred dollars by the time its all said and done and yeild very little results IMO.The only way to extract good power out of a NA Z or G is to tune for it.Two years ago we experimented with a piggyback similar to the UNI-Chip and were able to tune out NA Z to almost 300WHP.The car ran 13.1' with only headers,exhaust,CAI,pulley...Tunning is key,but bumping fuel pressure is not the way to do it,all it will do is spray more fuel through you injectors at an unkown and unctroled ratio as opposed to being able to adjust the injectors puls widths and scaling along with timing advance...Just my .02

Originally Posted by 9cobra3

What piggy back system allows full control of fuel and timing (advancing) at different engine load/rpm's?