pdominguez

I'm a newly x-chip owner, and I'm noticing some strange things.

On WOT in first gear, my boost peaks at around 13-14 tapering to 12-13. In second gear, it peaks to around 14-15 tapering to 13-14. Third gear and up, I'm seeing (I would assume) normal peaks of around 17 tapering off to 15.

Is this normal particularly for boost levels for first and second gears?

Thanks for your input.

mpwolf

TBB and other hoses for a boost leak. What shape are your BPVs in?

Mike2kS4

I had a bad problem with 20-23psi spikes in all gears... tapering to 13-14 or so.

As I posted yesterday, I installed a Piggie MBC and Throttle Cut Defender. I now have a 17psi spike and a taper to 14.5.

You may want to check for boost leaks (TBB) or leaky bypass valves, among myriad other potential problems.

1bads4

I am having similar problem, I think I may have an S chip instead of an X. Though I am peaking about 1.5 bars in first

Swank4

First gear doesn't build boost as much as the other gears. Second and higher gears should spike anywhere between 17-19psi and hold around 16psi then taper to 12-13 psi above 6k rpm. What octane are you using? If it's only 91 octane then those numbers are fine. What air temps/altitude were present? If below 60 degrees or so then those numbers look OK.

mpwolf

If you're peaking at 1.5 bar in first, something isn't right. That sounds like an XR spike.

J.Moss@TorqueFactory

You have an X chip. Didn't I tell you that?

Saloooon

It's definitely an X

Todeshandler

1.5 bar in first not good AFAIK... thats 21.75 pounds of boost.. you may have a boost leak

1bads4

my car last night, we never broke 14.2. Two things they said, one I have boost leak or two I dont have an x chip. The reason why I say this, is because I swapped ecu's on the track and with a stock chip I ran 14.407