2005 STi 17,800 miles

Mods:
UTEC (happened before install, and still happens)
Catless DP
HKS hi power exhaust
injen CAI
AEM Wideband

When i got the car in October it happened while the check engine light was on for a rear O2 sensor low volt/performance bank1 sensor2.

What happens at WOT 4th-6th when i hit 100MPH it feels like hitting a brick wall and RPMS go about 7k and it stops pulling instanly. I thought because the engine light was on this happened, but no cause when the light is off it still happens.

I even bought a UTEC with Stage 2 maps and it stills happens. I feel like it's the injectors and feul pump being maxed out running .14 Boost level stock VF39 Turbo.

I want this to be fixed before going to the dyno in 3 weeks.

 

Catless DP
HKS hi power exhaust

and Cobb AP + tune. . .you'll be fine. . .u dont need that other stuff. . .

 

the only things i bought was the UTEC and the Wideband. how will this get fixed with what u mentioned?

 

my car felt like it hid a wall after I hit 7k (right at the red line)rpm. is this some sort of safety measure subaru placed on our cars?

 

did u have the issue fixed? list your mods.

 

i just experienced it first time this morning. i've never adventured past 6k mark til today. it is comletely stocket except for greddy tic catback with 16k.

 

do u have a boost gauge? if so what was the boost at?

 

no on boost gauge.

 

are you taking it to the dealer soon?

you should have a boost gauge so you know what the turbo is doing.


what gear and mph?

 

hmm..so are you implying that this isn't normal?

 

i don't think it is normal

what gear and mph?

 

hmm... between 3rd and 4th. I don't recall the speed..but both 3rd and 4th gear at 7k felt like hitting the wall.

I'm gonna try again after work to see if it persists. I was thinking maybe my motor was still cold? but that can't be because I already had driven good 15 miles on the freeway prior to wot.

 

Really mine does it 4th-6th at WOT.

im scared to dyno it because of that issue.

 

Subaru has like a killsafe... if your driving the car too hard at a super high RPM.. it will shut the the engine off... You either have to shift into the next gear or wait for the car to slow down until it starts back up... im not sure if thats what you experience when you say it felt like hitting a wall

 

yea and i WOULD NOT get your car on a dyno OR tune it until all engine codes are cleared and you know its running fine...