Lately when I am in boost @ full throttle I am bogging (only @ wot). It started off as a faint bog and has gradually become worse. I am getting proper spark and fuel. Could It be my o2 going out?

Thanks

 

bump cause mine does it when my wastegate opens up...its like it looses all pressure but the boost gauge reads that im holding boost. any insite?

 

what are your fuel setups!????

give full setup detail (turbo / fuel management, etc) and MORE DETAILS.

 

tial wastegate running at 5lbs t3/t4e brand new with maxrev manifold. 2.5 inch exhaust. running uberchipped ecu with a decent tune on a buddy's car yet crap on mine (stock gsr with same turbo) dsm 450's fpr, walbro fuel pump 255lph, hks bov, ngk brke 7 plugs and a blaster external coil. all of this is on my b16. any ideas? i have the bin file on my computer if anyone wants to see it...pm me ill send it to u and u can check it out


Modified by delslow94 at 2:18 PM 11/3/2003

 

my 1st thoughts:

bad O2
wrong plug gap

 

i have a similar problem... Just put my boost guage and air/fuel meter on.... problem... my fuel pressure regulator is at 48psi... and my car is running lean... also on my boost guage i'm getting 5 on vaccume... isnt it suppose to be on 17-20? i change the plugs to denso irdium also.. when i drive the car hard.. it bogs down at about 6k... basic setup on the car is a b16 with aem fuel rail.. and fpr... vafc.... garrett t25... vortech fmu... msd external fuel pump... i check the vaccume lines and it all looks good... i'm located in oceanside cali... near SD.... is there any shop where i can take it to.. so i can get it dyno tune...
thanks

 

cant be 02! at wot the ecu is open loop mode and doesnt read off the 02

 

This is hapening no matter where I put the plug gap and I have made no changes to my setup. It has always run and pulled like a gem up until this problem started and gradually has gotten worse. It has never thrown a CEL. Is it correct that the o2 couldn't be the problem (non existent @ wot)?

 

do you have a fuel pressure guage? what is your fuel pressure at? maybe your getting too much fuel.

 

At wot your car does not use the o2 sensor. What have you done with timing?? msd btm??? How is your car tuned????

 

My friends does the same thing and he doesnt have the o2 sensor on(running open pipe). We are going to see of the o2 will help stop it from doing that @ wot. He has a crx with a d16a6 turbod by a greddy kit. Oh did I mention he has no FMU

 

this is hapening no matter where I set the FPR or msd btm. Any ideas?