What would the next step be if you already have bigger injectors, chip and exhaust with 320 bhp? Plus how much?

 

Presume this is a Cossie YB ?

Escort / Sapph / Sierra ?

Next step would probably be T34 .48 A/R and RS500 I/C if going near the track, and a decent oil breather too !

If the car is a 4x4 you'll need to consider the transmission if you take the power much higher and still drive / launch hard.

HTH

 

Having just noticed the area this is posted in, I presume it's a big turbo Escort Cos ?

If so then I would imagine you'll be looking for a set of 400's (light blues) or 403's (greys) along with a 500 cooler if hitting the track, although std IC/CC combo prob Ok for road use. Oh, a decent live map by someone who knows what they are doing too wouldn't hurt !

Look out for the clutch & 3rd gear though !