Recent content by powerlifter

Brought my '91 to Marc Haibeck. The 510 HP package (minus the Fidanza) has the beast at 528HP/465TQ at the crank. Marc IS the best....

Added long tubes Now at 364 RWHP on Doug's dyno. Hmmmm so anyone have first hand experience with a DRM500 upgrade?

<SMALL>I have a 1991 ZR1. Originally Dyno at 303HP. Rippie chip, k&n, corsa catback and replaced bad injectors. Dyno now at 343HP. What might I expect to gain adding the </SMALL><SMALL>Ported plenum and injector housings</SMALL> / 63 <SMALL>mm throttle body and retune?</SMALL> Any...

If memory serves me, The total cost was a shade over $700. Chip, filter, plugs, labor and the dyno tuning. Checked ZR1.NET and my #'s are pretty much on the mark for Chip, Filter & Exhaust upgrades.... although I JUST ordered my Corsa PowerPulse. I could feel the difference driving home that...

1991 Zr-1

I forgot to mention that Doug put in a slightly cooler running plug. Everything else is stock. Doug also leaned out the mixture... i forget the ratio though. MPG's are hard to measure as I have a tendency to make sure secondaries get used ! :)

Dyno results Hard to see the but between 3500-5000 RPM there are major torque improvements....

I'm considering catback systems and have been told by a few that the Corsa systems don't resonate (at least not much!). I don't expect much HP increase but certainly don't want a decrease. Anyone have experience with these on a '91??? Thanks in advance

I did a K&N open lid mod and had doug dyno tune the ecm. Picked up 30HP and ~45 pounds torque peak at the wheels. I have the dyno results scanned if interested....