B6T semput at 110 km/h - 120/h when not boosting

[rvind_nair]

Dear sifus,

Well I have a mazda b6t, recently have faced an issue where ma car semputs at 110 - 120 km/h when I don't boost. When boost it's not a problem.
Basically ma car specs are as follows :

B6T standard, fuel pump external, adjustable fuel regulator, boost controller but currently set to standard 0.7 psi, bov.

Wat can be the cause ??? Cracking my head already. Please help !!!! Thank you in advance.

 

[sekut_kring]

try check ur hose piping n connection,,,could be small leak ....happy hunting:sleep:

 

[rvind_nair]

Thanks bro for the advise, but I would like to know what hose piping and connection are you talking about as there are many hoses and piping available there. Hope to hear from you soon. Do you think that it might be the Air Fuel Sensor ??

 

[sekut_kring]

what i mean is intercooler hose piping... from turbo outlet to your throttle body..
air fuel sensor??? or oxygen sensor??

 

[maskulinB8]

Bro, what is your afr pressure setting? wats external fuel pump u r using?

 

[rvind_nair]

im using walbro external fuel pump... The afr reading is set to 2.8 i think. The AFR also got some problem. What u think ???

 

[maskulinB8]

im using walbro external fuel pump... The afr reading is set to 2.8 i think. The AFR also got some problem. What u think ???

bro, walbro as far i heard in tank fuel pump internal not external?? what injector ur using?
Better u set yr fuel pressure afr to 2bar & go for test run again. gud luck.

 

[rvind_nair]

well bro.. i'm using standard b6 engine.. with standard injectors... any idea if i should change them.. Well i'll try what u suggested.. I guess that ma AFR also got some problem .. need to get it changed asap. Thank you.

One more thing, any idea about AIC> is it good to use, how to go along about it. Where do i find them and get it fixed. Thank you.

 

[rvind_nair]

hey guys.. thanks for all ur help.. Issue already resolved.
I changed my fuel pump to external walbro.. and i changed my fuel regulator and set the psi to 2 bar. Now car is awesome. No more jerking.

Neway about AIC.. I still need more information. IT would be helpful. THank you once again.

Bump: hey guys.. thanks for all ur help.. Issue already resolved.
I changed my fuel pump to external walbro.. and i changed my fuel regulator and set the psi to 2 bar. Now car is awesome. No more jerking.

Neway about AIC.. I still need more information. IT would be helpful. THank you once again.