1987 GN 3 inch downpipe first startup

[@Tim1963-u6n]

Sounds like a V8 , Nice

[@turbosammy6085]

Sounds and looks AWESOME!!!!!😎👍

[@xdavstratx]

make sure you upgrade the injectors/get yourself a turbotweak chip and high flow fuel pump and hotwire kit otherwise youll run very lean and blow headgaskets invest in a scanmaster to monitor knock too

[@MarkIV_Garage]

already has a turbo tweak 16psi 93 chip and a hotwire kit, next is a PTE 5831 turbo, 340lph pump 80lb/hr injectors and a new e85 chip

[@grandnattygarage7355]

Sounds great, I’m currently on the market for a down pipe.

[@MarkIV_Garage]

Thanks! Got this one from "gn1performance" it's their 3" downpipe and 3" test pipe combo

[@grandnattygarage7355]

@@MarkIV_Garage I love them, that’s where I’ve got 90% of my grand national stuff from. I was looking at their down pipes as well as their pipes exhaust systems.

[@MarkIV_Garage]

@@grandnattygarage7355 nice! I'm also running their 72mm throttle body, matching plenum, and 3" cold air intake

[@MarkIV_Garage]

@@grandnattygarage7355 honestly go for the 3.5" downpipe btw, I just went 3" cus I was worried about fitment and squeezing it in but there's plenty of room

[@brianmathew09]

I can assure you a 3" downpipe has nearly nothing to do with that sound