The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

High psi/boost "burp"-possible cause?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

sweet97

15+ Year Contributor
2,386
18
Mar 6, 2004
auburn, New York
I am running near 30psi and have a dsmchip with fuel cut removed. Timing is 10* due to the high flow of air, 3200Hz per KEYDIVER. I get a quick "burp" or "mini" fuel cut. I have a Walbro 255 rewired, BRP7ES plugs gapped at .025". No knock, A/F around 11:1. I cannot figure whAT IS CAUSING THIS ABRUBPT "burp". Fuel pressure is set at 40psi, hose off as is programmed into the chip. Any suggestions from guys running high boost/big turbos?
I am going to back the boost a few psi and see if that helps. It seems the longer I am at this high boost condition and revving like in 3rd or mostly 4th I get the condition, not in 1st or 2nd as I am at redline so quick. I have one suspect coupler to change and then I have exhausted what I can try to resolve this issue. Thanks, Mark
 
I would gap your plugs to something a tiny bit bigger, like .28 - it may not seem much but in an environment like that it is. Also, try a colder plug like an 8es.
 
My inj's are 750's running a high DC. I was told to try nan OEM filter and my plugs I dropped to a .025 but a .022/.023 was recommended. I will do the filter first. Thanks, mark
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

  • For sale 4G63 NEW Stop Tech Drilled And Slotted Rotors
    New Stop Tech Drilled & Slotted Rotors $70 + shipping and paypal fees* FITS * Eclipse GST...
    • jersygsx
    • Updated:
    • Expires
  • For sale 2g 2G GSX/GST Manual Transmission Steel & Poly Mount
    2G GSX/GST Manual Transmission Mount (Steel & Poly) $45 + shipping and paypal feesYou must be...
    • jersygsx
    • Updated:
    • Expires
  • Wanted 1991 tsi AWD auto engine harness
    Looking for a engine harness for my 1991 eagle talon AWD tsi auto trans If anyone has one hit...
    • sanmantsi72
    • Updated:
    • Expires
  • For sale 1997 eagle talon tsi
    I have a 1997 eagle talon tsi fwd auto for sale. It has 108k miles and in good condition.Recent...
    • El_marto
    • Updated:
    • Expires
  • For sale 1G DSM 4G63 PARTS
    Cleaning out my shop closet, Buyer covers shipping & fee.Parts:.20 Over Turbo 6-Bolt Block...
    • The_Partout_Spot
    • Updated:
    • Expires
Back
Top