i have an evo4
atp 3071r
38mm wastegate
full 3" exhaust
at the moment has stock intake pod filter back in the engine bay un-covered
power fc
greddy type m intercooler kit
walbro in-tank pump
siemens 720cc injectors

my intake temps were mid-40s(celcius) on the dyno so tune wasnt pushed too far car made 320hp 17psi but decided to back off the ignition timing a little to keep it safe and made 300hp.

i'm building new intake now then will be back on dyno hoping to make 350-360hp 24psi

i know that with a better tune and boost up within the turbos efficiency range will make it come on better but what other mods should i be looking at which will hope give it a bit mre low end acceleration and hopefully some peak power too.

i know a good exhaust mani would help but want to keep engine bay appearing basically stock.

am looking at some 272 intake/264 exhuast cams should i get cam gears aswell??

what are the normal gains from water meth other than cooling intake intake temp and being more of a buffer against knock(more power from cooler intake and from increased boost/timing) sorry im a bit of a noob and water/meth is not common here.

any tips would be great thanks in advance for the help guys.

 

Good way to improve overall flow would be to port everything... ex. mani, turbine housing, and even intake mani and throttle body.

You can see hefty gains from injection. Many race cars will run race gas + water injection... similar to a meth/water combo. The water in particular is nice for road race, rally, or time attack to combat heat soak. You can safely keep the turbo in the top of its efficiency range if you can keep the charge cool and dense.

 

Stroker kit!