Fuel pump internals doesn’t need a tune. I don’t think the throttle body is up there with suggested first mods. Consider a rear motor mount, or...
Prv failure is what was looking for initially, as it cause weird issues. Didn’t see hpfp drop below 1600 when commanded though.
Row 189 your AFR tanks along with your HPFP pressure. Leading up to that you have some knock in the 5 range from row 178 until you are at 4130 RPM...
Take a look through here. https://mazdaspeeds.org/index.php?threads/what-to-look-for-when-buying-a-used-mazdaspeed.10009/
Where in Flroida are you roughly? Think I found a diagram/part numbers....
Why toss when you can get it fixed?
*not in 5th or 6th gear.
Isnt the shaft unbalanced now? So the bearings will take a beating and the shaft itself (before it goes into the bearing) will see increased...
Front Control arms for MS3 Gen 2, right then left....
The usual gas has up to 10% ethanol. Most people tuning for power on stock fueling go up to e30 or so. You have to flow more volume of ethanol, as...
I was suggesting the addition of ethanol, if you don’t already run some. edit: I believe a gallon or so to a full tank shouldn’t throw off fuel...
Are you running a fuel mix with ethanol? It could eliminate bad fuel as a culprit.
Changing cold start expected ECT (or something) was the way to lower cold start RPMs via tuning.
Enki should feel something when he powerfists it in.
Injector Rx seemed to be the place a few years ago. https://mazdaspeeds.org/index.php?threads/why-you-should-check-your-fuel-injectors.6879/
Remove from engine and send out for flow testing / rework is the normal method.
You might be due for a cleaning on the injectors. Would not be fun to be mid tune on the CST4 (you'll need an AP, or VersaTune too FYI) and need...
What does battery voltage drop to when cranking? EB - why you think new battery bad and not just something choking engine at idle?
Have you tried your basics of cleaning MAF and replacing engine air filter? Could also be a vacuum leak, have you checked for any hoses obviously...
What is your complete mod list? Just the access port?
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