boost spike issue

[queenskid926]

My mods are follow:

Stock jdm 7mgte new headgasket arp bolts,
Stock intercooler, piping, and bov,
bic ddp
full 3" exhaust no cats
afm mod to raise fuel cut
hallman es manual boost controller http://www.horsepowerfreaks.com/partdetails/Hallman/Boost_Controllers/Boost_Controllers/ES_Kit/7673


Im having some boost spike issues. I have the mbc set to around 10lbs. If i go wot all at once boost rises to fuel cut 12lbs ( i didnt back the screw out all the way yet lol) and then drops to 10 and stays there. If i roll on the throttle it goes to 10 and stays there so the only time the spikes happen when i instantly jam on the throttle.


I have my boost controller mount on my shock tower brake, right my the tems actuator so its not that far from the turbo.

Maybe the boost controller spikes only at the lower levels and i should turn the boost up some more, say to 14lbs and see if its still spikes?

any ideas?

I thought Hallman was a reputable manual boost controller.

 

[4mk3-4life]

are you using a aftermarket wastegate?

 

[queenskid926]

sorry fixed the issue, it was a small boost leak

 

[supramang]

sorry fixed the issue, it was a small boost leak

Hey so how does boost react now that it's fixed? I have a mbc too and mine always spikes up to near fuel cut and then falls off if I hit it, but if I roll on the throttle it will go to 9 lbs and hold. Sounds the same.

 

[queenskid926]

Hey so how does boost react now that it's fixed? I have a mbc too and mine always spikes up to near fuel cut and then falls off if I hit it, but if I roll on the throttle it will go to 9 lbs and hold. Sounds the same.

yes thats exactly what mines use to do , then fix the boost leak and now its perfect, holds the same boost whether if i roll on the throttle or not, but still builds more boost in the 3rd gear and up, 3rd and up i have it set at 10lbs, 1rst and 2nd it only gets to 7 or 8

 

[supramang]

yes thats exactly what mines use to do , then fix the boost leak and now its perfect, holds the same boost whether if i roll on the throttle or not, but still builds more boost in the 3rd gear and up, 3rd and up i have it set at 10lbs, 1rst and 2nd it only gets to 7 or 8

Weird mine shoots up like crazy in the low gears and seems more consistent in the higher ones. Where was your leak?

 

[queenskid926]

Weird mine shoots up like crazy in the low gears and seems more consistent in the higher ones. Where was your leak?

coupler from turbo to intercooler piping

 

[4mk3-4life]

mine does the same when i have the boost set to 10lbs, its 17lbs in 1st and jumps to 14lbs then drops down to 10lbs in other gears but my wastegate sticks open too sometimes and if i dont have to boost controller on it works fine.

 

[supramang]

coupler from turbo to intercooler piping

so on the bottom then?

 

[supramang]

mine does the same when i have the boost set to 10lbs, its 17lbs in 1st and jumps to 14lbs then drops down to 10lbs in other gears but my wastegate sticks open too sometimes and if i dont have to boost controller on it works fine.

yeah it's pretty lame huh?