phil_boyd Posted April 25, 2015 Share Posted April 25, 2015 (edited) have been building up my 91 for a while now and finilly got it on the road last week but its boosting way to high. i want it to boost 8-10psi but its going up till 14+. anyone have any ideas how to stop this? i huard and read mixed idea, not sure what to go with, external wastegate? adjustable actuator? map? cars jam ecu, japspeed pipe, blitz fmic, have wepr mani and decat but not on yet. any knowledge or suggestions would be appreciated, cheers Edited April 25, 2015 by phil_boyd Quote Link to post Share on other sites
ReeceGolliker Posted April 26, 2015 Share Posted April 26, 2015 Guessing it's a standard Ct9 and stock actuator? If so the wastegate is really small, you can try porting the wastegate out a little and get an adjustable actuator like an HKS one and setting it to 8/10psi. However an externally gated setup will always be best! Quote Link to post Share on other sites
phil_boyd Posted April 26, 2015 Author Share Posted April 26, 2015 Yeah standard ct9 and standard actuator! I've huard that making the airfilter intake longer works to Quote Link to post Share on other sites
ReeceGolliker Posted April 26, 2015 Share Posted April 26, 2015 (edited) Anything to reduce flow should help. I think you can buy exhaust bungs which will reduce the flow and should reduce the boost creep. Edited April 26, 2015 by ReeceGolliker Quote Link to post Share on other sites
Ryan_EP82 GT Posted April 27, 2015 Share Posted April 27, 2015 the spring on standard actuators gets weak after a while and struggles to hold the desired boost level so best off buying a hks or tuning developments actuator brand new. and also port out the wastegate on your turbo as this will allow the gas to be released better reducing the chances of creep. off topic...are you aaron c's friend with the ep91 conversion? Quote Link to post Share on other sites
phil_boyd Posted April 28, 2015 Author Share Posted April 28, 2015 Actuator and porting wastegate seem the way to go! Cheers for the advice guy! And yeah i am, you probs know me as phil with the starlet!! Quote Link to post Share on other sites
Ryan_EP82 GT Posted April 28, 2015 Share Posted April 28, 2015 youll not have any more problems when you do those fella, even with a decat and relocated filter youll be grand..if ya need a hand with the wastegate let me know mate happy to help, im sure aaron has your back well covered though. yeah thats exactly what i know you as. lol. is the wee motor going alright for ya? heard you had a scare up in jordanstown the other night! Quote Link to post Share on other sites
phil_boyd Posted April 29, 2015 Author Share Posted April 29, 2015 Aye sounds good, got more for the car and some good plans ahead of me! I've already got aaron roped into it haha, come down to arrons place sure when we are doing it.I know you as ryan with the 82! Yeah its going well, just a few other things i have to tidy it up! Haha aarons to the rescue again all they way up to jtown, hes some fella!! Quote Link to post Share on other sites
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