Boost Conroller
- Thread starter nash421
- Start date
hawkfan
Active Member
- Joined
- Aug 24, 2012
No track time yet.
You realize screwing with your boost from inside the car throws off your fueling, right?
On my car, I've got the boost set a couple of pounds less than when my engine would so 'splodey. Anytime I want lower boost, I just push the gas pedal a little less.
On my car, I've got the boost set a couple of pounds less than when my engine would so 'splodey. Anytime I want lower boost, I just push the gas pedal a little less.
jasjamz
THS Racer
- Joined
- Sep 30, 2004
Unless you use some sort of wideband tracking, a car tuned for 25 psi an say 11.0 A/F will start to lean out with the added air/ boost.
Decreasing boost will make the car rich.
Even the wideband correction will have to constantly adjust fueling to try to maintain the A/F ratio.
Set it and forget it. Use the throttle as needed. Non many cars here can use a ton of WOT on the streets.
Further clarification, please.
It's because the ECM can only read to 255 on the airflow. When you exceed that, the ECM has no idea if it needs to send fuel for 256 or 1000 g/sec of air. That means for proper WOT fueling, you have to adjust it yourself. More boost means more fuel.
Further clarification, please.
Just like it states. Bob splits the maf signal and can make a chip read wot airflow with an aftermarket maf and translator. He can double or triple the flow the ecm can read and thus, Bailey chips adjust wot fuel based upon actual airflow and not just static fuel delivery at wot. You still adjust the tune richer or leaner with the translator but once that's set, you can adjust boost and afr will stay the same. You need to adjust fuel with boost changes on a tt chip. Some like tt chips better.
Thanks for the replies. Learned something new about the difference between Eric's and Bob's chips that I didn't know before. Seeing as I have a boost controller, wideband, and knock reading capabilities, may have to give one of Bob's a try. Not to say I'm unhappy with my TT chip, just sounds like a fun way to learn more about tuning. Thanks!
BARRACUDA1968
Well-Known Member
- Joined
- May 4, 2011
If I'm thinking right boost controllers just make it easy and quick to adjust boost either under the hood or in the car?
Sounds like a neat idea at first but why not just use the actuator rod and set your desired boost and tune the car and be done? That's what my plan is. I don't want a street tune and a track tune, I just want one tune.
Now is a boost controller used in conjunction with the actuator or does it replace it?
Sounds like a neat idea at first but why not just use the actuator rod and set your desired boost and tune the car and be done? That's what my plan is. I don't want a street tune and a track tune, I just want one tune.
Now is a boost controller used in conjunction with the actuator or does it replace it?
Last edited:
The boost controller delays the signal to the wastegate and speeds up spooling by not venting exhaust energy during spool up...
...the other thing is does (on certain cars) fixes overboosting. If you have to stretch the wastegate rod banjo tight, it can't open enough (sometimes) to keep from overboosting. In that case, you can give resolution back to the wastegate setup.
...the other thing is does (on certain cars) fixes overboosting. If you have to stretch the wastegate rod banjo tight, it can't open enough (sometimes) to keep from overboosting. In that case, you can give resolution back to the wastegate setup.
Similar threads
