Boooooost limit?

[Turborized]

Right now I'm boosting @ 0.9 bar, wondering how high can Yrv boost go up to? Scared to pow engine

Is it possible to touch 1.5 bar? Really scared.

 

[DanzEterna]

use metal gasket 1st bro.

 

[kumar22mostwanted]

if ur gonna upboost above 1 bar u should get some sort of management either piggyback or standalone
just playing with a fuel pressure regulator and ignition timing is not enough
safest way to up boost is with a boost controller and management :top:

 

[Turborized]

i got all that, just not the boost controller, im scared if i do get one my hand with " itchy " hahaha.
i just tuned my e-manage last 2 weeks
wastegate 38mm can tahan 1.5bar or not? really want to try before new year.

 

[Accord80]

Right now I'm boosting @ 0.9 bar, wondering how high can Yrv boost go up to? Scared to pow engine

Is it possible to touch 1.5 bar? Really scared.

How many hp on 0.9 bar boost bro?? I'm also on planning to up boost my Myvi BOT. For now the boost is 0.5 on 148hp. But in order to do that, I have to upgrade the fuelling system 1st coz mine now is still stock. But from what I know, the highest boost I saw is 1 bar only (should be around 200hp).

 

[kumar22mostwanted]

i got all that, just not the boost controller, im scared if i do get one my hand with " itchy " hahaha.
i just tuned my e-manage last 2 weeks
wastegate 38mm can tahan 1.5bar or not? really want to try before new year.

heheh control urself bro
if not kabooom lol

 

[MR GREEN]

go on bro

 

[shiroitenshi]

Boost limit is relative to engine capacity, for a higher cc engine, boost increase results in a higher increase in cylinder pressure than small cc engine. 1.5 bar on a 2l, means you're pushing almost 1.5 times more the original capacity (not exactly, since turbo efficiency not accounted for, but enough for an idea for what the turbo is doing). That's why kancil doing higher boost is easy compared to bigger cc cars and why higher boost usually requires lower comp pistons to compensate for the increase in cylinder pressures. There is a practical limit to how much pressure the stock sleeves and piston rings can take before cracking/failing. The ring failure more likely to heat than the pressure itself. Which brings up to the next part.

There's the increase in temps since when air is compressed it generates higher heat, which is why the intercooler is bigger on higher boost cars, If someone has done it reliably on the standard block, then it's probably doable, with proper supporting mods like fuel system and intercooler upsize, lower comp pistons and maybe a more powerful ignition system and colder plugs. Can't compare mat salleh turbo boost limits to ours, because they usually have lower ambient temp (colder) compared to in our country.

Or maybe you'd be the first person to discover the boost limits on the stock internals. :P it might be doabie, but unless a few people have boosted reliably at 1.5 bar with the same block, there's no sure thing.

didn't mention gasket since already mentioned.

 

[kumar22mostwanted]

if u wanna play high boost on stock internal
u definitely need new management

 

[badtz_mark]

i'm using E-01 on my BOT myvi.
nice controls