Loss of power

[shadowx]

Add an air straighter. Where the tube slips together before the MAF sensor, get some window screen and wrap it around the tube so as for it to be flat across the tube opening. This should help. If it does buy or make a honey comb insert.

I still have the insert, is it the same if I put it back in? Also I was tuned with the insert out, does this affect anything?

I don't mind If the idle characteristic doesn't affect performance. I wanna know what causing this much power loss all of the sudden without CEL or codes.

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[K4fxd]

I have no idea on the power loss, the screen will help idle especially if you use E85.

I'd need to see some logs to try to determine what is wrong.
The insert and tune will not bring back your power unless your current tune is corrupted.

 

[GregO]

Also I was tuned with the insert out, does this affect anything?

Any time the MAF housing diameter is altered the transfer functions change.

 

[K4fxd]

The insert is out.

Do you have a tune for the insert being out?

If not it needs it and this would explain your power loss.

 

[GregO]

Do you have a tune for the insert being out?

If not it needs it and this would explain your power loss.

Does Steeda even give out their closed CAI transfer functions without using their in-house ECU tunes ?

 

[shadowx]

Do you have a tune for the insert being out?

If not it needs it and this would explain your power loss.

Yes it was tuned for that. It was going strong for a year.

 

[K4fxd]

Does Steeda even give out their closed CAI transfer functions without using their in-house ECU tunes ?

No but any competent tuner can figure it out. It is easy.

 

[K4fxd]

Yes it was tuned for that. It was going strong for a year.

Here is what I would do.

I'd reflash the tune just in case something happened to it. Not likely but costs nothing.

Then it's on to checking things like compression pressure ect. If you are able to look at logs you can find things like false knock or bad sensors, if that is what is causing it.

 

[shadowx]

"No turbulence due to placement of factory hood vents on 2018"
I just read this in steeda website for the CAI.

I have a different hood I installed last year does it make any issue with that? I didn't do any races after the new hood until a couple of months ago.

 

[K4fxd]

"No turbulence due to placement of factory hood vents on 2018"

Do you have the closed or open box?

 

[shadowx]

Here is what I would do.

I'd reflash the tune just in case something happened to it. Not likely but costs nothing.

Then it's on to checking things like compression pressure ect. If you are able to look at logs you can find things like false knock or bad sensors, if that is what is causing it.

I was on 93 tune then e85 and now back on 93.

I'm about to do logs now.

 

[shadowx]

Do you have the closed or open box?

Closed

 

[GregO]

No but any competent tuner can figure it out. It is easy.

The CAI the OP is using isn’t round at the MAF sensor area. I don’t see how it’s possible to properly calculate transfer functions without a calibrated flow bench.

 

[K4fxd]

Closed

The hood vents have no bearing on this CAI. The turbulence is from the slow airspeed through the huge tube at low engine speeds.

I'm about to do logs now.

Look for knock reduction.

 

[GregO]

"No turbulence due to placement of factory hood vents on 2018"
I just read this in steeda website for the CAI.

I have a different hood I installed last year does it make any issue with that? I didn't do any races after the new hood until a couple of months ago.

Did you make any changes to the grill opening to the OEM bottom section of air box ?

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