2.0 Bar - 28,96 psi on stock turbo BPU - is it safe????

Might be safe as far as A/F, but EGT's would probably go through the roof plus your turbo's won't last long.

Mani hit ~2.17 bar a few times in his car a few eeks later it was smoke time... But of course now he a has a T-66, so everythings ok.

OK, than what is safe boost for bpu?

when i was BPU i was boosting around 22 PSI

i would say 18-20 PSI on stock turbos.. 20 PSI is pushing it.. all it is doing is overheating the turbos

Yea... im never gonna run over 20psi again... (if I get another set of stockers)... The weather caused boost spikes of around 24psi.. and I quickly killed my new turbos that way..

Next time Im gonna run like 16psi daily, and 18-20 when racing only probably.. I cant afford to go through turbos like this anymore

I will set it at 1.5 Bar = 21.75 psi and I will use it only during races, daily driving - not more that 1 Bar.
What do you think?

when you said your A/F monitor reads "rich" what was the A/F ratio?
GEnerally 18psi stock twin max out....I remeber this from huge discussion long ago everywhere on the forum.

Zerosoul said:

when you said your A/F monitor reads "rich" what was the A/F ratio?
GEnerally 18psi stock twin max out....I remeber this from huge discussion long ago everywhere on the forum.

Click to expand...

I have K&N A/F monitor and it shows red - lean, yellow - OK, green rich. I had all green lamp on = I was very rich.

Do you remember discussion details? Anybody had made some Dyno tests or that was just said 18psi max???

dont remember detail...too much to remember. but basically anything above 18 the stock turbo moves out of its efficiency range. I think it produces more heat than power.

K&N makes A/F monitor? wow, never heard of that!
does it use wide O2 sensor? you should get one of those that reads out A/F ratio in #s so you know exactly where you are at. green, red and yellow just dont cut it. its like saying "the car felt faster".
you should be around 11.5-12:1 range. no higher. anything below 11.5 is probably a BPU running without a fuel controller (too rich).

Yes it uses wide O2 sensor.
I have scale on it from 17.1 (lean) to 12.1 (rich) around 3000-4000 rpm I am at 14.7 At full boost I am at 12.1 but that is the end of scale.