GNX Performance question

[Detomaso71]

Has anyone added the precision SLIC and 3 inch DP on the GNX and noticed any difference?
I am reading my GNX SLIC has better flow than the stock 87GN but I dont see any comparisons to precisions

Also are there slightly larger down pipes that look sort of stock?

 

[TurboRegal84]

The GNX stock location intercooler has similar air flow to one on a stock 87 GN however it has more fins which help with cooling. I am willing to bet that the Precision IC has larger inlet and outlet tubes which will be a big improvement for you. Kirban used to carry an upgraded downpipe that bolted to the factory exhaust elbow but many people go with the downpipe that eliminates the stock elbow as it is the main restriction.

 

[Lil Truck]

I run an ATR 2.5 stock replacement DP and stock IC, they work well to low 11s with alky.