guy_from_nerk

Alright so I have been having some issues with my car. First the car wouldn't build any boost on 2step, got that fixed (for a short time). Had the car tuned on 10psi and was running great, until today. Went to turn the boost up while street tuning and suddenly the car wouldn't make more then 8psi. So we thought maybe it was something to do with the Boost By Gear setting, so we changed that and nope didn't fix anything. So we decide to come home and check for leaks in couplers and vacuums. Didn't find any but went ahead and tightened up all clamps and put zip ties on all lines that didn't already have one. Take the car back out and it only hits 6psi and holds there. Came back re-checked vaccuum lines and couplers again found nothing wrong.


Any ideas as to what could be causing this? I have heard the wastegates firing ring, but its a brand new Precision 46, and was working just fine 3 days ago, car wasn't driven since then until today. I am going to pull the wastegate and reinstall it after inspecting just to see if thats the issue.

Car has a 6lbs spring in the gate, but again it has seen and held 10psi with no issues up until today and nothing has changed setup wise

TheShodan

iTrader: (14)

Could be the piston in the gate is not opening properly (like a valve leak). Take that gate off and check it.

guy_from_nerk

The Shodan you have been pm'd sir. I appriciate all help in advance!

Hiboost 2.0

Go back an use a vacuum leak tester buid the psi to 15 psi drops fast u gotta leak make sure u use soapy water in a spray bottle spray everywere . It could be meny reasons turbo to big vacuum leak boost gauge line has a hole ..trust me go back an look over everything

guy_from_nerk

Well I got the wastegate tore off and everything looks ok. We did however find something that might be the issue. My HKS blowoff valve will spin freely like theres no tomorrow. You can do a complete 360 with the thing sitting in the flange. So we went and picked up a new snap ring and o-ring, hoping this helps

guy_from_nerk

Well that didn't solve the issue. Car only hits and holds 6psi and builds no boost on 2step

98integralsB18

I know you probably already checked but and exhaust leaks or anything, before the turbo.

guy_from_nerk

None that I could see. Going to take a look and see if I find any small cracks or anything in the turbo manifold. Just strange how it ran great last weekend, parked it, didn't even start it up until we went to tune and it does this. Its always something with this damn car lol.

boostedBLUfg2

that is the nature of modifying cars, unfortunately.

TheShodan

iTrader: (14)

May be time for a boost leak tester. Most leaks can't be seen or heard from first glance, unfortunately. Hows the condition of the turbo itself?

cdaiscool

Have you checked out the boost controller? If it's stopping at 6 lbs, that makes me wonder if the boost control isn't opening at all.

The fact that it went from 10 (setting) to 8 (going bad) to 6 (shot) confirms it for me, at least until you check it out further.

Let us know how it goes for you.

guy_from_nerk

Boost issue appears to be fixed!! I think the wastegates firing ring wasn't sealing properly or the clamp wasn't on tight enough causing a leak. Either way she just saw 5-6psi on 2step and 10psi at wide open throttle! I tore the gate back off and all the way apart. Reinstalled the spring, put gate back on the car. Started up let it idle for up to temperature, hit 2step saw 5-6lbs. Then took car for drive and hit 10 the very first pull

guy_from_nerk

Ok well were back to where we was yet again. Took car out and this is what happened. Went to do another pull hit 8, then 6 again. I think its something to do with the PWM solenoid only reason I beleive that is because another guy posted this on team-integra

"Ever since it left the dyno it won't build more than 11-12 psi... It made 24.5 on the dyno for my 538whp pull with no problems.... Then when I started making pulls on the street it would only make half that.

I had asked my tuner to turn the boost back to 18 psi for street driving when I left so I know he changed some of the PWM settings but he said it was supposed to be 12 psi in 1st and 2nd then all out in 3rd an 4th.

Unfortunately I am only on neptune chip version and I have no Demon board yet so I can't datalog or see really anything other than what my boost gauge tells me. My buddy is going to let me borrow his Demon soon and we are going to do some tinkering and see if maybe its just in the PWM settings...."

turboda4dr

hope you work out the snag soon

guy_from_nerk

Whew whoo pretty sure the boost issue is solved!! Posted this on hondata's forum and a mod on there gave me this reply: "You have it set to gear based duty cycle and not gear based target boost.'

So we changed that and guess what, 12psi 5 times in a row lol