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I still have a boost problem!

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Old 03-16-06, 05:04 PM
  #1  
Yes it's twin turbo...

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I still have a boost problem!

after thinking i fixed the problem about 2 weeks ago i still have some sort of a boost problem. 2 weeks ago i wasnt getting enough boost a 8-5-6 boost pattern, it ended up being the wastegate and precontrol solenoids, the wires were swiched between them. so i swiched them back and though i had fixed the problem i now figure out went i hit WOT the other day that my primary boost hits 14psi! and im getting a hesitation, but i dont thing it is the normal 3k rpm hesitation, because it happens at differnt rpms, somtimes at 3k other times at 3.5k. it only happens at WOT also. so if i floor it ill hit 14 psi and either 3k rpms or 3.5k rpms ill get a hesitation that wont stop unless i take my foot of the gas.

any ideas on what this could be? oh and my seconday boost isnt a big deal compared to my primary but it will spike at 12 and go down to 8. i need to fix my primary problem first. any sort of help greatly appreciated!!

thanx,

preston
Old 03-16-06, 05:27 PM
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ah yeah, fuel cut!
boost limits of the stock ECU are hit at around 12psi - you're hitting 14psi and the cuts are catching up with you. check your turbo pre-control lines cause they are most likely leaking somewhere.
Old 03-16-06, 05:51 PM
  #3  
Yes it's twin turbo...

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ok i will
Old 03-16-06, 06:02 PM
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just convert it to a non-sequential setup and you wont have that problem. haha.
Old 03-16-06, 06:48 PM
  #5  
Yes it's twin turbo...

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ya but i love having 0 lag

havent had a chance to check yet cause the weather is soo crapy, but do you guys have any other suggestions?
Old 03-16-06, 08:18 PM
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primary boost in controlled primarily by the turbo pre-control solenoid system... hence if your primary is high only, thats the likely cause.
Old 03-16-06, 08:19 PM
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Pretty soon zero lag will become zero compression.

Definitely be sure the precontrol and wastegate lines are leak-free.

Dave
Old 03-17-06, 04:00 PM
  #8  
Yes it's twin turbo...

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ok ill be able to check them today since it is nicer weather
Old 03-18-06, 06:33 PM
  #9  
Yes it's twin turbo...

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well when i went to start my car yesterday it started for a breif second then shut off, when i went to try and start it again it wont start the instrument panel doesnt work eg. lights, mi dont show up, radio dispays time but doesnt turn on and i checked the fuses and fuse b1 is blown, so i went and got a new fuse and i put it in and went to start it up and it it didnt start, it turns over but wont start. so i checked the new fuse and it blew again. so i have a short some where, since i really dont want to mess around with my electrical sytem i took it to the forbiden dealership because all rotary shops near me are atlest an hour away and towing would be outragous. anwy way i wont have my car back probably til turs/fri hopefully. is this shorting a comon problem? i havent touched my elecrical system so it couldnt be any thing i did and my car was running fine the day before. any ideas?
Old 03-19-06, 01:15 PM
  #10  
Yes it's twin turbo...

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bump^ just wondering if its a common poroblem
Old 03-19-06, 02:27 PM
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My 93 rx7 just got out of the shop b/c mazda sold me 86-91 non turbo plugs and they blew up inside of my motor. Before they bley up, i had a lot of bottom end torque, but i didnt have much top end. The mechanic adjusted a valve while it was in the shop, and now i have increadible top end but absolutly no torque under 4800 rpms. any suggestions?
Old 03-19-06, 07:15 PM
  #12  
Yes it's twin turbo...

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hijacker! make your own thread!
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