Is that noise in the clt, mat, tp hell everywhere? Bad ground?

 

looks to me like you don't have a restrictor pill in your map sensor line which is making it jump around a bit and the MS is changing the PW and dutycycle to try to compensate for that.

I'm not really sure what's up with your CLT

 

Where did you ground the MS and sensors?

Ken

 

Ground is on trans bellhousing right beside rear plate, and a 4ga to the frame rail. No restrictor in the map tube what can i use as a restrictor that might be around a garage?And what size hole?
lol

My plx 0-5v output is bad anyone ever have that problem?

 

here is the next log. Put a restrictor in the map line. hope its better going to redo grounds tomorow and see if the clt and iat look any better.

 

if you put a restrictor in the line, then its definitely not small enough. It should be a little chunk of plastic or metal (think like an airsoft pellet or something) that has a 1/16" hole drilled in it, positioned about an inch or so upstream of the MS's MAP sensor.

Your temperatures just look like ground noise, altho based on the high and low values they arent really anything to worry about, the scale of that noise is fairly small. The worrying stuff is the noise in the RPM and MAP signals.

 

How does the tach signal look? ok or needs cleaning up? I dont see tach spikes so Thas is good but Im new to all this, I looked in the megamanual and the pics it shows look better.

 

Typically I see problems like that when there aren't enough ground wires out of the MS to the engine, or if the engine ground to the chassis is not sufficient.

On Tofuball's old 'vert when we first got it running (when I was a newbie) I grounded the MS straight to the chassis, and found that every time he hit the brakes, the CLT, IAT, and TPS would change. After that we grounded to the engine, and never had that problem again.

Ken

 

Ok well redoing ground tonight. Ill have a new log tomorow sometime. Oh yeah where is the best ground location on the engine? And chassis?

 

I ground the MS to one of the holes in the engine itself underneath the intake manifold.

For grounding to the chassis, the stock locations are fine, just make sure you clean them up if they're corroded.

Ken

 

Ok Here is the next logs from today still dont look right. But I upped the boost 7psi. Feels ok except for a stumble about 3500 rpm think its when my secondaries come on. But feels pretty good otherwise still needs lots of refining anyone want to check out my msq? Maybe give me some good advice. PS its a half bridge

 

here is latest file

 

Im using the rs-autosport harness it has labeled grounds on like 12 13 14 or some thing for the clt sensor iat and tps is that right or should I cut the wires there and jumper to pin 19 or what. I just keep seeing dirty clt and iat signals.

 

So I had staging working fine then all the sudden it goes back and fourth from working then not working a have datalogs ill post and see if anyone has any idea.