what boost psi at around 300 hp?

**john123456789** · Saturday 8th March 2014, 18:06

just wondering what psi do people usually run there car at when there making around 300 hp i know its not all about the pressure it depends on a lot of things but just curios what psi they run is it over 20 im running 16 psi with hybrid turbo and supporting mods

**martin_r_smith** · Saturday 8th March 2014, 18:10

Have you had it custom mapped since the turbo and injector swap?

**T5frankie** · Saturday 8th March 2014, 18:35

you will need an 18t running at 18-20psi for 300bhp

**t5 pete** · Saturday 8th March 2014, 18:50

Mine was a 18t running at 15psi and hit just short of 300bhp

**merc85** · Saturday 8th March 2014, 19:06

my 18t was runing 19psi to make 297bhp

**john123456789** · Saturday 8th March 2014, 19:11

yeah it has been mapped again i have upgraded exhaust manifold bigger down pipe de cat stainless exhaust. 3 inch turbo intake pipe bigger injectors and the turbo technics hybrid turbo that's rated up to 320 hp (stated by turbo technics) and it runs 16 psi i want to get to about 300 hp though will the boost need to be raised?

**john123456789** · Saturday 8th March 2014, 19:17

and when you two made around 300 hp was you using the standard air box am not sure whether i could gain any thing by changing the intake im currently using the standard air box and filter

**claymore** · Saturday 8th March 2014, 19:18

My 18t was 16psi for 291bhp (Now at 1.3 bar which is about 19 psi)

**merc85** · Saturday 8th March 2014, 19:19

Originally Posted by john123456789

and when you two made around 300 hp was you using the standard air box am not sure whether i could gain any thing by changing the intake im currently using the standard air box and filter

Im ruining a inclosed Simota Carbon air filter, ive never ran on a dyno using a std airbox so dont know if theres any difference

**martin_r_smith** · Saturday 8th March 2014, 19:20

What power do you have now?

**T5frankie** · Saturday 8th March 2014, 19:21

so you have the 15g/t28 hybrid? ask andysR he has the same turbo

**deathrider311271** · Saturday 8th March 2014, 19:25

standard airbox is good for 400bhp

**merc85** · Saturday 8th March 2014, 19:26

Originally Posted by T5frankie

so you have the 15g/t28 hybrid? ask andysR he has the same turbo

Andy doesnt know how much power he has with his setup, But its more the 297 bhp atm lol

**T5frankie** · Saturday 8th March 2014, 19:37

Originally Posted by merc85

Andy doesnt know how much power he has with his setup, But its more the 297 bhp atm lol

yeah with lots more boost lol

**john123456789** · Saturday 8th March 2014, 20:24

thanks for the info i think i will have to have a word with the bloke who does all the work for me and see about raising the boost

**LiamT4** · Saturday 8th March 2014, 20:59

Originally Posted by deathrider311271

standard airbox is good for 400bhp

I agree. I can't see the standard type of induction kit having much of an improvement over the normal airbox (for most peoples needs). Most do it for looks and sound.