no idea only thing you can change is the tip for different sound purple and gold

 

Sorry guys, I did not check the forum since I was out of town. I have a stock sts setup with the HKS BOV. The HKS is not adjustable hence the flutter at low psi. I still have not had time to tune the car but I am hitting almost full boost in first gear. I installed back the stock cats and will be just heatwrapping the exhaust before I tune it. My stock dyno before the HKS BOV was 330 at the wheel at 5 psi max boost. I installed the an AEM EBC gauge and it messed up the car. It made it slow off the line but would hit higher boost (7psi) in the higher gears. I did not know it was the problem since I was driving the car slow in the begining until I installed the boost controller. Now with the boost controller off the car is so much faster using only the stock wastegate. The car goes sideways in first and second gear and sounds really nice. After the tune I will post more videos. My kit came with an "STS wastegate and STS BOV" personally the HKS was SOOO much better in terms of response and holding the boost. If I rev the car to 6k in nuetral the HKS bov goes off. It never did that with the stcok one.

 

HKS "Believes" there bov is designed so well it does not require to be adjusted. There is no adjustments on the BOV. You can only change the tip on the end to get a different sound out of it. I have the stock tip and it is loud as hell. I know there is a purple fitting which makes it even louder. Hope this helps.

 

Interesting. Has anyone with a TIAL BOV changed it to the HKS? It's probably unlikely, but now you guys have me wondering if the HKS unit will improve performance over the TIAL units.

 

i lovedddd my hks when i ran it on my suby

if i were to buy a new bov id go with a syncronic bov those things are the **** and theyre one of the best you can run on your car

 

The only thing is if you go with HKS you need to by the universal hks flang and weld it to a new pipe. You cant use the stock sts pipe to make it work.

 

Wow you Bov goes of by just reving? So it is the BOV that we are hearing and not a compressor surge?

 

yes the actuator should be located as close to the turbo as possible. Also try messing with your rpm dependent boost and your gain levels at different rpms. If its like the apexi unit you wont necesserily need to adjust target boost off the bat. start with your gain and bump up incrementaly until you get the desired boost level and then start to adjust it by rpm to deal with boost fluctuations or tapering off.

 

That was a compressor surge you heard, hopefully after my tune it will fix that. The BOV goes off when the turbo is hot and you rev it to 6k. You can not here the bov at low rpms when in nuetral. I personally really like the hks bov, it sounds really nice. I would recommend it if your interested in changing the sound.

 

I ordered the 8.7psi small blue spring for the wastegate instead of using my EBC. I have had good luck with the stock 5.8 small red spring. It hold the boost steady at 6.1-6.3 psi in second gear on. I was wondering if anyone else has changed there wastegate spring and what there experiance was. Any info would be great since iam going for tune SAT and tune the car with that spring. Thanks!

 

dude stick with the ebc. It will give you way more control over your boost which imo is a neccessity with the turbo placed so far back. Not to mention you wont hardly boost in first or second gear witghout it

 

You have a fast spooling turbo compared to the rest of us. I mean you are getting a surge with just a blip of the throttle and lower gears. Where you the one that did all the boost leak test on the entire system?

 

i see positive boost at 2200rpms

 

on 1st gear and what about full boost? I hit 8psi at 3300rpm but that is on 5th gear because it has much higher load. He's getting a surge by just reving the car!!!

 

3rd gear. ill do a log this weekend one in 1st and one in 4th

 

I will let you know how the new spring works with my car. I have ben driving the car with the ebc off for the last month and i find the car runs better. I think I just had a bad experiance with the AEM truboost. Do you think 8.4-8.7 psi is too much presure for a stock motor?

 

I dont think I have a different turbo, its the t04 e60trim from sts. The only thing different might be is I have the revup motor since the car is 2006. I did a boost leak test 3 weeks ago but I ont think I posted it.

 

not at all. Thats where i ran mine. The trick with the ebc is to get the turbo HOT on a preliminary run on the dyno, so that when the tuning runs are done you can see the "street" spool characteristics. That may have been what caused your car to not run so smoothly with the boost controller. It also helps to get the boost control dialed in first before tuning it so the tuner can know exactly what the spool characteristics are going to be like.

 

Thanks Daniel, I was a bit worried it might have been to much boost but am more confident now. This weekend will be the first tune the car ever got. I have been running the sts base map (Rich). I heat wraped the stock exhaust setup yesterday and notice quicker spool time. I have been using the EBC from day 1 and some people commented the car was faster stock in first and second gear(I felt that way too). I would never get tires and the car was only fun on the highway. I had it installed at a shop and checked out by different shops and noone found any problems. Then one day I turned it off and man the car was quick. Even though it was hitting less boost the car would get tires in second. I will posts some videos after the tune or even on the dyno.

 

im running an 8.7psi spring in my car with an aem tru boost running almost 10psi