Need Performance Improvement Help
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,477
Likes: 80
From: Hawaii
Need Performance Improvement Help
Waited many years and I finally got me a nice 93 LT1, A4. I'm currently in the plan to up grade my Vette with some 354 gears first, K&N open air filter, and some 1.6 roller rocks with LT4 springs, guide plate, and harden push rods. My questions is how do I go about recalibrating the speedometer with the new gears, and will I need a performance chip burned to this new configuration?
Thanks...
Thanks...
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
You will need to change the speedo pickup gear in the A4 to calibrate the speedo to the new gears.
You won't likely need a new chip burned but an AFPR would be handy so you could bump fuel pressure a few pounds above the current value, as measured at idle with the vacuum line disconnected.
You won't likely need a new chip burned but an AFPR would be handy so you could bump fuel pressure a few pounds above the current value, as measured at idle with the vacuum line disconnected.
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Originally Posted by James93LT1
Waited many years and I finally got me a nice 93 LT1, A4. I'm currently in the plan to up grade my Vette with some 354 gears first, K&N open air filter, and some 1.6 roller rocks with LT4 springs, guide plate, and harden push rods. My questions is how do I go about recalibrating the speedometer with the new gears, and will I need a performance chip burned to this new configuration?
Thanks...
Thanks...
At any rate, welcome to CF!
Thread Starter
Drifting
Joined: Oct 2004
Posts: 1,477
Likes: 80
From: Hawaii
65Z01... Thanks for the info, gives me the direction I needed, and will add the AFPR to my next to do list.
James94LT1...Thanks for the welcome, Love my new Corvette
Perfusion... Thanks for your info and welcome, can't wait to get all the mods in my Corvette
James94LT1...Thanks for the welcome, Love my new Corvette
Perfusion... Thanks for your info and welcome, can't wait to get all the mods in my Corvette
Last edited by James93LT1; Oct 23, 2004 at 10:06 PM.
