I have no idea whether its me only just noticing, but I think I'm getting boost when I never used to.

I can floor it in 6th at 30-ish mph, with just 1,500rpm showing, and it will instantly give me about 0.15 - 0.2 bar. Its then working below the surge line, so it only rises very gradually until its giving about 0.75 bar at 3,000rpm, then all hell breaks loose

I don't remember getting positive boost so early before, although I can't really say I paid too much attention to it

So, for those of you with a boost gauge, when do you first see positive boost? (and what turbo are you running?)

Dont know if it helps..

But I have a BB T34 or T38 TO4E 50 trim and stage 2 .63 turbine. With supporting mods.

And I have positive boost below 2000RPM too. Something like 0.3bar at 2000rpm and then max boost 1.2bar 3500/3600rpm.

This post had me curious, so this morning after dropping the missus off at work I had a little experiment....

Firstly, I'm not sure if there is any difference in our 6-speed boxes, but at 30mph in 6th my car is at 1050rpm so just ever so slightly over 1k, no boost there at all.

However by 40mph (still in 6th) now at 1.5k revs, the needle has lifled to 0.15bar

50mph 2k revs - 0.2bar
70mph 2.5/2.6k revs 0.5bar

Then full chat (1.4bar) at _ _mph (eeerm bit over the limit ) at exactly 3000 rpm.

My turbo is a gti-r hybrid, one of barbz's own design, however I aslo have a TI stage 2 head, thought I would mention that as, since having it fitted it has certainly improved how early my car comes on boost.

Angelo.

I was guessing at 30mph - could easily have been closer to 40, or it could have been less than 1500rpm - either way, it was very low revs

Ah right, I thought there was maybe a ratio difference between coupe-six boxes and plus boxes, or something like that, as far as I know there the same... never mind lol.

Don't you have super head Nigel? I see positive around 2k, slightly lower in a high gear and high demand ( plodding up a Hill in 4/5th)

Yes, I have a Barbz head - I specified strong mid-range, rather than outright top-end power, so it is definitely optimised for an early spoolup.

It still needs 3,500 before things get going properly though...