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> CT20 turbo overboost
post Mar 24, 2015 - 10:49 PM
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Island_Racer

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How capable are these turbos at surviving pressure above 18psi. Ive heard "hot air" etc...but i have a water injection system....i can clamp the signal and tune beyond the 18psi fuel cut but what other than hot air should i be concerned about? and do you think the water injection can cover that?
 
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post Mar 25, 2015 - 10:42 AM
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Smaay

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wont make a difference. you are out of the efficiency range of the turbo.


--------------------
2001 Celica GT-S Turbo
1997 Supra TT 6speed
1997 Celica 3MZ/1MZ swap
1990 Celica All-Trac
post Mar 25, 2015 - 11:58 AM
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Island_Racer

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QUOTE (Smaay @ Mar 25, 2015 - 11:42 AM) *
wont make a difference. you are out of the efficiency range of the turbo.


I thought that as well, however i was tuning on the weekend and did a run at 16 psi...made 290whp....when I did my last run however i took off the air filter and in my run the car went to 21psi (filter was blocked up) i lifted off the accelerator when i noticed we hit 21psi but when we looked at the dyno sheet it was at 310 just before i came off....there was way more rev to get (i lifted as soon as i noticed the 21psi).

This is why i ask...because im intrigued by what happened....can you explain that....i havent found a compressor map for the ct20...if you have one can you post it for me?
Id love to do this again and have more to say, but i just wanna know if the turbo is structurally capable of maintaining 20psi....

This post has been edited by Island_Racer: Mar 25, 2015 - 11:59 AM

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