big lag - twin turbo?

[Bambi]

The kkk26/27 that I run gives good power (+-210kW on the wheels at 1.4 bar - soon to be 1.8 bar) but I only get boost from around 4500rpm. I could get better with a fancy turbo I suppose, but how much better, and still I don't think it would be OK for skidpan gymkhanas, where I need good boost responce (the standard kkk24 wasn't too bad) from 2500rpm.

How about sequencial twin turbo's say - kkk26/27 (cause I already got it) and a garett T2.5 for the bottom end. Or would two smaller parallel turbo's be better?

What do you guys think? Has anyone ever tried and what went wrong ? (I'm aware that there is almost nothing new and that someone somewhere has already tried everything.......)

[kwlw]

What do you guys think? Has anyone ever tried and what went wrong ? (I'm aware that there is almost nothing new and that someone somewhere has already tried everything.......)

Exaust manifolds and piping are nightmare. Not very impressive gains also.

From what I know, all I5 twin turbo projects (I have seen) ended up using single turbo. Like ball bearing ones and stuff.

Sau

[Jamo]

Why look for an over complicated solution when the answer to your problem is ditch the k26/k27 and get a GT3071 or gt2871 if you need the low grunt as the 2871 boost the same as a K24.