stock cosmo twins in non-seq ????
 

if I turn up the boost do I have to retune the fuel maps on the haltech???? yeah I know dumb question... so just answer it already...also is the best boost controller the greddy profec b or truboost aem???:scratch:

Bump... anyone home?? wheres arroncake when you need him??

The Profec is tried and true, though I have a TruBoost and it works just fine (I like the gauge style better than another damn little box!). Retuning largely depends on the existing tune. If you're non-seq already and they tuned it safe up to say 15psi then you have some playing room. If it's pretty on the edge at your current levels then upping it would need some rework. You'd probably need to talk to whoever tuned it.

The chief advantage to the TruBoost is the gauge layout. It is a "dumb" boost controller that cannot adjust the consistency of the boost (open loop only). That is why there are no gain settings, only a basic duty cycle and wastegate spring setting.

If you have a Haltech you could control boost with that. But the fact that you are asking these questions indicates to me that you should look at the Greddy Profec Type S (which is like the old Profec B they don't sell anymore). The type S is a very simple boost controller to configure, simpler than either the Profec B Spec II or the AEM Tru Boost.

alright looked into haltech boost control solenoid ($150) and trim control($79)...its =$229 + shipping $40 = $269 so I sould just get the truboost($267) right....????

the Profec S will be easier to adjust. Get that, unless you absolutely just have to have the gauge style boost controller.

ah yeah maybe you didnt understand my point....$409 for the Profec S.... ah not gonna happen... guess Ill just go with the truboost for $$$267 tahnx guys for your help

There are some advantages to that price though. Closed loop offers faster spooling, and more precise control especially under varying conditions where a set duty cycle can't compensate. If you can, look for a used Profec first before deciding.

If you can find one, use the old school GReddy PROfec B controller. Not the Spec-II. The old one. It's great.

B