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The mkiv Supra Owners Club

Uping the boost of stock turbos


redline Rooster

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Hi all,

 

I know this may have been asked before, i did a search first but could really find the answer i was after - so here goes :p

 

Basically i'm looking to increase the boost level of my stock turbos. Also mainly to increase the boost of the 1st turbo mainly as it could do with having more punch, also i wouldn't mind more boost in general.

 

so what i'm asking is, is it quite straight forward to increase the overall boost, not by rediculous amounts just enough, or will i need to fit things like fuel cut defencers and higher fuel regualtors for this.

 

I assumed if i was just going to wind the boost by a smallish amount i could get away with it!?!??!

 

cheers for any info on this!!!! :baa:

 

Rooster

:flame Dev

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Well so far I have done no engine mods at all yet! Thats my next phase!! hahaha :p

 

So 1.2 bar is the safety limit for winding the stock boost then eh!?!? thats about 18PSI, whats the stock boost then? - i thought it was around 9 PSI or 0.7 BAR ??!!?

 

i'd be looking for around 15 PSI boost i reckon then to start off with, then i'll go higher as the modding goes on!! :D

 

cheers

 

rooster

:flame Dev

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Terminator,

 

yeah i was actually gonna fit a boost guage in the next few weeks - whats a EGT guage?!?!?! :baa: not sure what that stands for? haha

 

yeah i still have my cats fitted. Thats another mod i'd like to do is remove them, but then theres the risk of blowing the Turbo oil seals isn't there!?!?!?

 

rooster

:flame Dev

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look at top of screen for top_search.gif then click left mouse button and you will see a search box

.CLICK ME to find all the info you need, dont forget to fill in the form for a prize

then type in the box any of the following

 

egt

boost

turbos

 

and you should have lots of things to read

 

http://www.geocities.com/funny3jokes/animcomics/animals/Dogs/blackdog.gif

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Originally posted by redline Rooster

Terminator,

 

yeah i was actually gonna fit a boost guage in the next few weeks - whats a EGT guage?!?!?! :baa: not sure what that stands for? haha

 

yeah i still have my cats fitted. Thats another mod i'd like to do is remove them, but then theres the risk of blowing the Turbo oil seals isn't there!?!?!?

 

rooster

:flame Dev

As said try the search you will find enough to keep you busy read for hours:D

 

EGT Exhaust gas temp gauge, IMHO an essential for increased boost so you can watch for dangerous high temps.

 

Removing cat's can to Quote Chris Wilson " Show tired seals"

Many cars have run happily at 1.2 bar for years, some even higher without a problem. If you just take out your back cat you should get 1.0 - 1.1 bar if you have a free flowing back box. Remove both ands you can hit 1.4 -1.5 which is generally not considered to help turbo longevity.

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