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renegade_ewok · 07-14-2008, 10:08 PM

Trying to diagnose this issue as its just kind of annoying right now. Heres all mods basically that could be relevant...

- Nismo 555cc injectors
-300zx mafs
-Jim wolf retuned ECU - chipped for injectors/maf
-Greddy Intake, FMIC, BOV (vented)
-3" TBE
-HKS Step 2 Cams 264/272
-300zx Throttle Body
-Turbo XS Manual Boost Controller

Essentially what happens when I drive around in the 2000-2500 RPM range before I hit boost, on partial throttle, is some bogging/hesitation. The car will just feel like it is hesitating and won't feel linear. It will buck a tad too. If I let off the gas and get back on it, it is cleared up usually or if I get on the gas hard and hit a few psi of boost it clears it up significantly. Sometimes it never happens, sometimes it happens every gear but as soon as I get past 2500 the hesitation never exists.

Car was run at 10-15 psi and it exists at any boost level.

My first guess was that this would be the vented BOV richening the car out and making it bog... am I right in that assumption? I know throwing a wideband on the car would basically tell me if I was right or wrong, but I don't have one of those nor the money for it. Should I get someone to recirc the BOV for me and see if that solves the issue or could it just be a shitty tune? Don't know how good the jim wolf tunes are as I bought the car with it.

07-14-2008, 10:08 PM	#1
renegade_ewok Zilvia Junkie Join Date: Oct 2007 Location: NYC Age: 33 Posts: 450 Trader Rating: (0)	Bogging/Hesitation out of boost Trying to diagnose this issue as its just kind of annoying right now. Heres all mods basically that could be relevant... - Nismo 555cc injectors -300zx mafs -Jim wolf retuned ECU - chipped for injectors/maf -Greddy Intake, FMIC, BOV (vented) -3" TBE -HKS Step 2 Cams 264/272 -300zx Throttle Body -Turbo XS Manual Boost Controller Essentially what happens when I drive around in the 2000-2500 RPM range before I hit boost, on partial throttle, is some bogging/hesitation. The car will just feel like it is hesitating and won't feel linear. It will buck a tad too. If I let off the gas and get back on it, it is cleared up usually or if I get on the gas hard and hit a few psi of boost it clears it up significantly. Sometimes it never happens, sometimes it happens every gear but as soon as I get past 2500 the hesitation never exists. Car was run at 10-15 psi and it exists at any boost level. My first guess was that this would be the vented BOV richening the car out and making it bog... am I right in that assumption? I know throwing a wideband on the car would basically tell me if I was right or wrong, but I don't have one of those nor the money for it. Should I get someone to recirc the BOV for me and see if that solves the issue or could it just be a shitty tune? Don't know how good the jim wolf tunes are as I bought the car with it.