Reviews of the Cobb AccessPort

[tokyogtr]

This one will be brief as it's only based on my drive to work this morning.

Flashed the Stage 2 100 OCT map onto my GT-R last night then took it for a very brief drive just to check everything was ok. Everything was fine, no errors. It did stutter a tiny bit at first but it the car was cold, after 2 mins it was fine.

So, this morning, sun shing, birds singing, old ladies doing old ladies things in the side streets of tokyo (sweeping).... then i drove past and all that got sucked into the black hole that was trailing my car.

Two words. F*CK ME!

Drivability is the same if not slightly better now compared to the Mine's map. No more jerkiness at all from 1st to 2nd.

Boost gauge hit 1.45 at full throttle in 1st and 2nd gears. It was tricky to watch the gauge and the road though. In 3rd it only hit what looked like 1.1 bar.

I now get a bit more wheelspin in 1st gear and the exhaust sound seems to have become a tad more aggressive, but that might be my imagination.

In terms of acceleration there is a very very noticable difference in power and speed.

Conclusion: Seat of the pants non scientific feedback is this map has unleashed a fair amount of power. I'm sure it's taken full advantage of the deliciously tasty ENEOS high octane premium fuel that I use at $1.7 per liter...

After thinking about it more, I realize how great this device is. I'll be able to clear error codes, read them, reflash with anti-theft, economy, stupidly fast modes etc, and take advantage of any new maps. Most of this can be done on the fly without needing to hook it up to a PC. It's a brilliant travel companion.

Like to say thanks to Benji for getting it to me in Japan in less than 2 days (how you did that I have no idea) and obviously to COBB for creating such a great tool. The GT-R needs equipment like this to fine tune and unleash it's enourmous potential.

Tony

PS I have an aqualine run this weekend (same dead straight road on the top gear japan bullet train race) so i'll really be able to open her up there.

[Jm-Imports]

nice ione mate am also looking forward to try this on my GTR..

are you worried about the clutch handling it ??

also do you have decat and rear exhaust too?

[Scrappy]

Get some video of your acceleration runs fella. That would be very interesting to watch fairplay

[tokyogtr]

i'll get some video this weekend.

not worried about the clutch, seems fine.

i have mine's exhaust and mine's hi flow cats.

[tokyogtr]

btw, back to my observation about the boost jumping to 1.4... is that just because the boost gauge is rubbish or am i really boosting that much? i'm sure i read somewhere it should only be 1.1 to 1.2. from what i can remember the Mine's is .9.

[NickM]

Be careful with the boost mate.

[tokyogtr]

Originally Posted by NickM

Be careful with the boost mate.

that's the problem, how can i be careful with it? it's a preprogrammed map and i'm worried they've made a mistake based on the octane level. i'm not going to push it now until I get an answer back from cobb.

cobb, if you are reading this then please let me know what i should do. boost definitely jumps to around 1.4 albeit briefly. there should surely be boost protection in there. this was one of my concerns given different temps, humidity, fuel etc to what they're using in the US. am i using the wrong map for Eneos High Octane fuel? should i have used the 102 RON map instead of the 100 OCT map?

ben, maybe you can point them to this thread?

[DCD]

Use a dedicated boost controller to avoid these potentially dangerous spikes. Could also be down to the size of the wastgates in the turbines, if the hole is too small there is just no way to dump the extra pressure fast enough.

[tokyogtr]

Originally Posted by DCD

Use a dedicated boost controller to avoid these potentially dangerous spikes. Could also be down to the size of the wastgates in the turbines, if the hole is too small there is just no way to dump the extra pressure fast enough.

i'm really hoping to avoid that though. i was fairly certain that the r35 ECU is more than up to the job... OR, is this happening because I have the Mine's VX Rom installed?

[Arch5]

I don't think 1.4 bar is too bad after seeing this.

[tokyogtr]

there's no video, well not that i can see anyway... is it youtube or something?

[MWH]

hi i have just fitted full sunline system with cobb stage 1 and iget boost spikes in 5 and 6th gear iwas told that i needed a booost controller and this will sort it out.the acceleration is fuki.. unreal now love in it

[Jspeed]

Originally Posted by MWH

hi i have just fitted full sunline system with cobb stage 1 and iget boost spikes in 5 and 6th gear iwas told that i needed a booost controller and this will sort it out.the acceleration is fuki.. unreal now love in it

What? I was told I had to remove my boost controller or the AP would not work! Can anyone confirm this so I can go and hook my EVC back up?

[tokyogtr]

Originally Posted by Arch5

I don't think 1.4 bar is too bad after seeing this.

ok, see it now. i'm not sure what the numbers are. is that in bar or psi? it's different to the JDM version gauge.

[Arch5]

Originally Posted by tokyogtr

ok, see it now. i'm not sure what the numbers are. is that in bar or psi? it's different to the JDM version gauge.

That's in psi. It's spiking to 25.