Hi,

If im changing from 803's to 403's with a chip for 403's....and im leaving my boost pressure at 25psi does the bigger injectors give me any more bhp/torque...just wondering...

my spec is: t34(360).63, 803's, -31, 3barmap, full magnex, K&N cone&alu trumpet, group a coil, blue leads, late escos headgasket with ARP headbolts...boost peak 25psi and 23 continue...

regards....

 

The change in torque comes from more boost.

 

Why would you chenge your injectors but not up boost anymore etc?

 

Surely you will be overfuelling if you leave the map unchanged ?

Same injector opening time with a bigger injector - I guess you'll get bore wash if it runs at all.

 

i was just wondering.....

 

He said a different chip though, so the map wouldnt be unchanged.

 

what would be a normal boost pressure for these kind of injectors.....

and i mean normal...

 

Peaking at 2 bar or more.

 

I think its no more than 27 psi for these injectors iw as running 25psi on mine have them available if you wish to buy no done many miles and you will need to get youcar live mapped and setup for these.

 

27psi is what i run with my T4 and 403s
not sure what boost u can run with a T34

 

i wouldnt use an of the shelf chip with greys, you need to get your car set up with them

i was running 25psi on greys with a t34 on a collins chip was a bag of wank

had my car setup by karl peaks at 31psi and holds 26-28 depending on abient temps

and drives sooo much better

 

27 psi on a t4 is flowing a lot more air than a t34 tho

 

A mate of mine from PF has 403's and a T34, he is holding 2bar and peaking a bit over that, its making just over 380bhp but broke the rollers on its full boost run, apparently it did run over 2 bar before he owned it but its plenty how it is now

seems a good setup for a t34, drives nicely

 

What cc are green / grey injectors?