I would take all the performance parts off and drive it around for a while and see if the problem is gone. I don't think any of those parts will raise the performance without proper tuning.
If that oil catch can eliminates the PCV you are just asking for trouble. There is absolutely no reason to have it on a street car.
The short ram intake may show increases on the dyno but they are a waste on the street. When you are stopped at a stop light underhood temps increase which can cause a significant increase in intake air temps. This causes the ECU to richen the mixture and retard the igntion timing to protect the engine, both of which reduce performance. And even when you take off and get some cool air in the engine compartment the computer doesn't react instantly and you end up losing the 'race'. I would replace it with a proper cold air intake.
Does this 'racepipe' eliminate the main cat or the precat? Does it have O2 sensors before and after it? If it does you should get a check engine light with a corresponding drop in performance.
The high pressure fuel pump is a complete waste unless you are making significantly more power.
You should never have to drop the heat range on a modern engine that is nearly stock so I would put the proper ones in, although I doubt they are causing you problem.
Although the dealer can't deny you warranty service unless they can prove that the parts caused the problem I wouldn't risk it. It would be pretty easy to prove that something like an oil catch can caused damage to the vehicle.
I would be most concerned that your wet compression test raised the readings 20 psi. That's pretty significant. How much oil did you put in? Adding too much oil could artificially raise the compression readings.
If that oil catch can eliminates the PCV you are just asking for trouble. There is absolutely no reason to have it on a street car.
The short ram intake may show increases on the dyno but they are a waste on the street. When you are stopped at a stop light underhood temps increase which can cause a significant increase in intake air temps. This causes the ECU to richen the mixture and retard the igntion timing to protect the engine, both of which reduce performance. And even when you take off and get some cool air in the engine compartment the computer doesn't react instantly and you end up losing the 'race'. I would replace it with a proper cold air intake.
Does this 'racepipe' eliminate the main cat or the precat? Does it have O2 sensors before and after it? If it does you should get a check engine light with a corresponding drop in performance.
The high pressure fuel pump is a complete waste unless you are making significantly more power.
You should never have to drop the heat range on a modern engine that is nearly stock so I would put the proper ones in, although I doubt they are causing you problem.
Although the dealer can't deny you warranty service unless they can prove that the parts caused the problem I wouldn't risk it. It would be pretty easy to prove that something like an oil catch can caused damage to the vehicle.
I would be most concerned that your wet compression test raised the readings 20 psi. That's pretty significant. How much oil did you put in? Adding too much oil could artificially raise the compression readings.
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