Thanks for the tip and thank God I don't live in Texas! Maryland is bad enough...

 

i had truboost its junk now i am on a pro halman manual i love it simple it works builds boost faster more control and its reliable

 

its really not that bad, boost is not steady but usually stays around the .4 psi range.. big wastegate, external dump and my current setting seems to like it. I still prefer to use it than my better hydra boost control, it makes me change boost on the fly.

Hix try setting the spring pressure somewhere close to 6.5 maybe try 7 or 7.5, i think 8.7 is kinda high for low boost. I set mine at 7 and i boost me to 9 psi at 3K on a GT30 on duty cycle of 15%

 

i just looked at his logs again...yep ther is a +/- 2psi variation accross the board. meaning it bounces very quickly between 8 and 10 psi.

 

thats kinda too much boost to be jumping around... lol does it bounce all across the rpm or just at the start? its not the first time i've heard of that issue though.. if nothing works might as well get a better BC...

 

It is as soon as I hit the pedal. Reason I got it was I wanted AEM gauges since I got the AEM UEGO, was almost the same price as a regular boost gauge. It works quickly on the fly and was simple to program. It just dosn't hold pressure. Gonna lower my SPr setting to 6.5 and Duty A to 20%. Everything else I am just gonna leave unset and see if that helps.

 

its perfectly consistent all across the power band...ace you have aem log program?

 

For the cost of a new BC I could just upgrade springs or get a used Tial WG

 

yeah try playing with the settings a bit before you buy anything else.. if you are consistent without the truboost its prolly not a wg issue.

chris, log program like the aem fic software? i have it, wanna email me the log?

 

Semi consistent but I don't seem to hit high boost as fast without it. My spring is 8psi but at WOT or partial throttle I am at 6psi until far up the scale.

 

well it depends...mbc go between 60-140 new.

my old mbc. has a switch so you can go from wastegate spring pressure (low boost) to mbc (high boost)



can find it here
http://turbosmartdirect.com/front/in...hk=1&Itemid=26

little pricey for an mbc but worked great

or
hallman mbc

http://www.jscspeed.com/universal/bo...controller.htm

 

yeah why waste the money.

no the aem pro software comes with aem log, its so you can graph the data...i think i still have your email saved...brb

 

ill just send ya the log software too

 

ill check the log when I get my windows laptop connected to the internet, i cant find the wireless card

 

SPr set to 6.5 and duty to 50% I am pretty steady at 9-10 per turbonetics and ace. Turbonetics said its most likely a bad spring or it really is a 6psi spring.

 

i recommend the halman i run it and it does work for the real

 

halman is good

 

You have your wastegate crack pressure set too high, set SPr to 1... that is my conclusion. I have had the trueboost for a while and like it alot. And also have seen the good and bad qualities of it on my car as well as customers cars. I wouldnt recommend it for a large turbo set-up because there is no gain control, the duty cycle is the same across the board. Setting the crack pressure doesnt work well, it results in fluxuation. Set it to 1psi and see if your boost stays steady, my bet is it does.

 

well at 6.5 50% just barely gets me to 10psi.

 

crack pressure will not affect how much boost you hit per same duty cycle. Set SPr to 1psi. Trust me. I have a 5 pound spring, set crack to 1psi. I can get 20psi out of it. If I set crack to 5psi i get fluxuation, saw it on my dyno last tune and on an s2000 recently.