bogging in boost

Pimpin Dsmstyle · 11-01-2004

It was fuel cut. I guess i have no sort of boost controller and the way its all setup is allowing the boost to spike as high as the fuel will let it, then it bogs... That problem is being solved friday and will not be driven till then. I also have some other fix up work to do then.

**Kracka** · 11-02-2004

Run a vacuum line straight from a boost preasure source to the turbo wastegate. You'll run about 10 psi that way and you'll have no problems (assuming its the stock wastegate).

**JET** · 11-02-2004

Quote:

Originally Posted by 90lazerRST

It was fuel cut. I guess i have no sort of boost controller and the way its all setup is allowing the boost to spike as high as the fuel will let it, then it bogs...

Fuel cut would by no means be classified anywhere near a bog. You were probably detonating because of too much boost on pump gas. If you hit fuel cut you would have been trying your damndest to keep from eating your steering wheel! I would really recommend staying out of the throttle until you get that fixed, like talontsidude said, just run a vacuum line to it and run 10 psi.

Pimpin Dsmstyle · 11-02-2004

Bogging was the best way to describe it i guess... i know when its gonna come so its not a huge shock. I am pretty sure thats what it is. Im gonna reroute some lines and get it at stock lvl and we will see if that is the case. If its not the case, i will be back here begging for help

Emcee gsxtc · 11-02-2004

Yeah be careful, fuel cut hurts, and steering wheels do not taste good.

Alpine TSi · 11-02-2004

Fuel cut is scary, it feels like you just left your motor and trans behind you when it stops.

Pimpin Dsmstyle · 11-05-2004

Well i got my lines adjusted properly, and when i can come up with some money i will get a boost guage so i can see where my boost is exactly at. However, every once in a while, when i go past 5k hard ( WOT) it occassionally does this "bogging" It could be a bad misfire.. it is quite scary but its not how you guys describe fuel cut ( mouth in the wheel kinda shit) . Any ideas? If it is misfire, is that my timing or what?

Alpine TSi · 11-05-2004

Fuel cut occurs when the ECU sees entirely too much air compared to the amount of fuel it thinks it is delivering. It then tells you by doing something that results in the car feeling like it just dropped the motor out of the car. It feels like you hit a huge pothole while going 100mph, as said before, it would be hard to not bite the steering wheel.

You may just be knocking so hard(probably due to boost creep, what kind of exhaust/o2 housing are you using?) at that RPM that the ECU is pulling a shitload of timing and it feels like your car isn't going anywhere when it should be. My car does that due to a bad knock sensor, I can watch my knock count max out randomly while cruising and if I stomp on it just for giggles, I can hit 17psi and feel like I barely even put it down.

Get a boost gauge, controller, datalogger, and make sure your plugs are good and gapped properly and only run premium 92 octane, unless you hate your pistons.

Hope this helps.