Tremendous boost drop?!
#1
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Tremendous boost drop?!
Hi guys.
I apologize if there is already a thread on this but anything will help.
I recently changed out my 9.8 hotside with a 10.5 which was a pain in the ***. After getting everything back together and settled in. Went out for a tune,
I wasnt hitting full boost till 4500k. My peak was at 25psi and then drops to 20 at redline. I attempted to turn the boost up but for some reason it didn't budge. Note before I was at 28psi and held all the way.
Any idea what to check or do??
I apologize if there is already a thread on this but anything will help.
I recently changed out my 9.8 hotside with a 10.5 which was a pain in the ***. After getting everything back together and settled in. Went out for a tune,
I wasnt hitting full boost till 4500k. My peak was at 25psi and then drops to 20 at redline. I attempted to turn the boost up but for some reason it didn't budge. Note before I was at 28psi and held all the way.
Any idea what to check or do??
#6
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^ Yes the wastegate actuators are identical between the 8 & 9 turbo
What is your method of boost control? Is you're wideband reading leaner than before?
If you're boost leak test came back good check for the following:
- Is the wastegate flapper seated properly when closed
- Check for an exhaust leak from mani to turbo
What is your method of boost control? Is you're wideband reading leaner than before?
If you're boost leak test came back good check for the following:
- Is the wastegate flapper seated properly when closed
- Check for an exhaust leak from mani to turbo
#7
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Already checked the hotside/mani/downpipe etc.
no leaks. Gonna attempt to pre load my wastegate and see if that's any help. According to my tuner my AFR's are on spot. I do not have a wideband
no leaks. Gonna attempt to pre load my wastegate and see if that's any help. According to my tuner my AFR's are on spot. I do not have a wideband
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