Bought EFI a year ago and got it from Nick. 2 free tunes and the 530rwhp tune with AD150, DE downpipe, PPE shim, SC4 with 1056 and ran 8.000 in the 8th and 10.3 in the 1000ft. Dyno'd 531
Now I have RDL ups and cast manifolds, tru-trac, banks super scoop and hot pipe, egr delete pipe for better...