Tuning Tips GTX30 Cossi

[Steffen H.]

spec now:

GTX30/72r
0,82 A/R
4x4 manifold
head and block breather
grey Bosch injectors
3 bar map
mongoose
large custom intercooler
stock intake
stock cams

the car is late on boost (4000rpm) what can I do to get earlier spool? More mid range power...

[Simon T]

who mapped it?

[mark shead]

They are laggy but a graph would be good to see. If going for 500hp a bw Efr 7064 and the correct manifold with come on boost 900rpm earlier.

Mark

[Steffen H.]

a friend of mine, but the greys are on the limit, have a set of siemens 850lb here, will put them in soon.

is there any chance in cams? inlet cam with more lift?!?

how much ignition timing can a YB set to...as there is no knock sensor for the ecu it is hard to find out and we let it at stock setting

[Cochyn]

Is it a long stud block?

[Steffen H.]

not yet

[Cochyn]

Limited really then, I'd swap to the siemense or light blue injectors. I run a t34.63 on virtually the same spec on light blues, no lag and very responsive.