cobb access port question

[aaronc7]

sleeper3: I'm not sure about that one, would have to ask cobb or some tuner that's dealt with it all I guess. Thsi was cobbs dyno of power @ 50% throttle duty cycle vs 100.

 

[aaronc7]

ok just for a little comparison. the gt25r would hold boost all the way to red line and its just as small as the k04 if not smaller. so saying the turbo is running out of steam and has to taper down to 7 psi by redline is just stupid in my eyes. i would agree with them tapering the boost down to save the motor but as far as the turbo not being able to hold boost is just rediculous

Cobb talks a lot about the cam setup and it leaving its efficiency range after 6k rpms or so. Possibly that's a factor as well? And how would we know a GT25 would hold boost all the way to redline? It may very well run into the other hardware limitations that the K04 is running into.

 

[sleeper3]

ok just for a little comparison. the gt25r would hold boost all the way to red line and its just as small as the k04 if not smaller. so saying the turbo is running out of steam and has to taper down to 7 psi by redline is just stupid in my eyes. i would agree with them tapering the boost down to save the motor but as far as the turbo not being able to hold boost is just rediculous

size isnt everything. it also has a lot to do with the wheels.

 

[sleeper3]

sleeper3: I'm not sure about that one, would have to ask cobb or some tuner that's dealt with it all I guess. Thsi was cobbs dyno of power @ 50% throttle duty cycle vs 100.

yeah and I think that air flow doesn't change at all between 90-100% of open. so it's a moot point, I was just saying, our throttle is never 100% open.

 

[Munnugles]

the only reason y i was asking about the vta also is that my car the way it is now, runs like crap in recirc and runs perfectly fine in vta... i guess some cars love it and some hate it... i am running a tad bit lean i think cuz i do get popping when i slightly reving it but thats it...

 

[aaronc7]

The car is set up and designed for recirc. It's always going to run better in recirc than VTA. If its running better in VTA than recirc then it's some other variable...probably a problem with your BOV.

 

[Erich]

The car is set up and designed for recirc. It's always going to run better in recirc than VTA. If its running better in VTA than recirc then it's some other variable...probably a problem with your BOV.

Or a faulty MAF

 

[AutoXRacer]

ok just for a little comparison. the gt25r would hold boost all the way to red line and its just as small as the k04 if not smaller. so saying the turbo is running out of steam and has to taper down to 7 psi by redline is just stupid in my eyes. i would agree with them tapering the boost down to save the motor but as far as the turbo not being able to hold boost is just rediculous

There are also issues with the shaft getting soft from the high heat produced at high rpm/boost levels... (notcool)
The GT25R is a much more robust turbo than the K04...K04s are not recommended to be used as high rev/boost turbos; from what I gather.
(dunno)

 

[aaronc7]

What? What's this?

[/IMG]

 

[EngulfinFlames]

(rockon)(rockon)(rockon)(rockon)(rockon)(rockon)(rockon)DUDE, post more info, whats your impression on it. difference and all that.

 

[squabbin]

Bahhh u SOB u got urs already...I'm horribly jealous!

 

[sleeper3]

nintendo ds?

 

[Munnugles]

nintendo ds?

i thought it was a PSP...

 

[SwampAss]

someone photoshopped my name off of it.

 

[MS3077]

someone photoshopped my name off of it.

ROFLMAO!!!

 

[SHAGwagn]

wow...gues they are out. Any first impressions???

 

[aaronc7]

I think my bpv might be causing issues with mine...still working stuff out, stay tuned. A couple other people have posted on the other forums and have said good things(although no descriptive explanations)

 

[aaronc7]

Besides my little issue...power is a lot smoother I will definitely give them that. Driving around power comes on very smoother at half throttle/causal driving. No on/off feel at all.

 

[Mspeed3]

im gonna have to wait because none of the calibrations match my parts. Hopefully the protuner software isnt outrageous

 

[aaronc7]

They are making MS CAI map. Once thats out, get the CS mid pipe and you can run stage 2 + ms cai