For anyone interested: i was at Horsepower Logic and had Jack make a few pulls.
The previous readings of 267WHP was with Sillen CAI & CBE on hi test pump gas.
Todays run showed 286WHP with the addition of Z1ported plenum & Z1 Hi Flow Cat.
Jack was not very high on the ported plenum. He said he had tested a bunch of em and none had shown any power gains. He said the prior pull was a bit under what other Z's run with the G3 & CBI. He also said 286 is a fairly normal reading for the mods I've done.
IMO...I would hold on the ported plenum and put the money toward the suspension.
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