ok today i dropped in my y8 block and head...used all my dx stuff like intake manifold, dizzy, alternator stuff like that. when i went to start it, its starts fine but it idles high which i know how to fix, but it liek redlines at abour 3500 and its like a slower pace redline please help me GRR SO FRUSTERATED

 

tTt PLEASE

 

3-4 k is ecu limp in mode
swap ecu

 

What ecu would i need to use... 88-91 si? PLEASE

 

BUMP

 

if ur dx is a dpfi
then use a dx ecu

if its mpfi then u can use hf,si, ex
pr4 ,pr3, pro