Originally Posted by Alberto

I thought it was sketch too just didnt say anything. I personally wouldnt recommend the revup lower plenum to anybody, unless you have crazy cam specs, and are capable of safely revving high. Ive only seen 1 NA dyno that was legit and gained power with that plenum tuned, and its not yours....6200rpm power peak stock, how did the peak drop so much? Based on that alone I would throw your "baseline" out the window which means your gains arent correct.

Originally Posted by RRev Brian

I have nothing to gain by posting up this graph. This is not a car we worked on, and I am not trying to sell these parts, I was just trying to show the power gained by one of these plenums on a car that was run on our dyno. I was just hoping I could give some information to the 350Z community.

The customer said that this was the plenum off of the stock 06 350Z, I am not sure if it was the revup or not.

Brian

Originally Posted by audiblemayhem

yeah but 233 with cams, intake and exhaust is weak!!! was the first run done in first gear and then the second in fifth??