Hi guys,
I'm planning to try and mod for a bit more power soon enough (89 bighorn 4JB1 2.8ITD). I've got my oil catch can on, boost and EGT guage in, service done, will do cambelt soon. Once exhaust and snorkel are done I will be winding up fuel and boost at the very least and possibly swapping a subaru turbo in. I want more power lower in the rev range aswell as more power up high in the rev range as nothing really happens until 2300rpm.
I'm thinking I will go with a steel 3inch dia snorkel, I prefer the look of plastic snorkels, but no one can tell me how restrictive they are compared to a 3inch steel one.
I want to know what size exhaust people think I should go for, keeping in mind that I want low restriction and will be modifying the engine for more power. I will probably make the exhaust myself, so all I need is to know the size 2.5? 2.75? 3inch?
Also does anyone have any idea where to get cheap exhaust pipe, bends or donuts and flanges?
I think that's all for now, obviously I will have to do the 3.1 filter swap and block off the overboost protection.
Thanks in advance