Fitter removed throttle actuator plate - effect?
Discussion
Recently, I had two new shiny hybrid turbos sent back to me from Finland for a 535D (E61). The turbos have been proved to be good for 450hp ++ at 3.2 bar
Whilst at it, I asked the garage to fit a few other stuff: Wagner cooler, new vacuum lines all round, etc.
One of the fitters (not a mechanic per se) told me he had removed the throttle actuator plate from my car, because it served no purpose and it would help my car to breathe when I got her remapped etc.
So, once everything was put on the vehicle, and I drove around for a few days prior to the remap, It felt awfully sluggish up to about 2k rpms, and then felt a tad lethargic up to redline.
Remap time came and it pulled a pathetic, heartbreaking 260 BHP on the rollers prior to the map when it ought to have been closer to 286 hp.
I thought perhaps it’s because the ecu doesn’t know the turbos are bigger/larger inter cooler etc.
After an exhaustive day at Unicorn Motor Developments in Manchester (I’m in London) it pulled another heartbreaking max of 360 BHP, at 2.7 bar.
Rick from Unicorn made the comment that throttle actuator fault was logged on the ECU and although the turbos were very happily providing the boost, there seemed to be some sort of “blockage” in the engine that wasn’t allowing the air to reach the Pistons.
I ought to add that prior to the work and removal of the actuator plate, my car drove perfectly fine and performed “normal” for a standard 535d.
Did the removal of the actuator plate hinder my remap? Did the engine put some sort of restriction so Rick couldn’t work more magic on my car?
One thing that the fitter didn’t do as asked was clean my inlet manifold, so I will be doing that shortly but hoping to go back for round 2 at 3.2 bar with a car that gives me no issues.
Thanks in advance for any replies given.
Mr Fox
Whilst at it, I asked the garage to fit a few other stuff: Wagner cooler, new vacuum lines all round, etc.
One of the fitters (not a mechanic per se) told me he had removed the throttle actuator plate from my car, because it served no purpose and it would help my car to breathe when I got her remapped etc.
So, once everything was put on the vehicle, and I drove around for a few days prior to the remap, It felt awfully sluggish up to about 2k rpms, and then felt a tad lethargic up to redline.
Remap time came and it pulled a pathetic, heartbreaking 260 BHP on the rollers prior to the map when it ought to have been closer to 286 hp.
I thought perhaps it’s because the ecu doesn’t know the turbos are bigger/larger inter cooler etc.
After an exhaustive day at Unicorn Motor Developments in Manchester (I’m in London) it pulled another heartbreaking max of 360 BHP, at 2.7 bar.
Rick from Unicorn made the comment that throttle actuator fault was logged on the ECU and although the turbos were very happily providing the boost, there seemed to be some sort of “blockage” in the engine that wasn’t allowing the air to reach the Pistons.
I ought to add that prior to the work and removal of the actuator plate, my car drove perfectly fine and performed “normal” for a standard 535d.
Did the removal of the actuator plate hinder my remap? Did the engine put some sort of restriction so Rick couldn’t work more magic on my car?
One thing that the fitter didn’t do as asked was clean my inlet manifold, so I will be doing that shortly but hoping to go back for round 2 at 3.2 bar with a car that gives me no issues.
Thanks in advance for any replies given.
Mr Fox
stevieturbo said:
Who removed it and why ?
keemaklan said:
One of the fitters (not a mechanic per se) told me he had removed the throttle actuator plate from my car, because it served no purpose and it would help my car to breathe when I got her remapped etc.
1. Someone finding out what this thing actually does.
2. Probably putting it back on.
There must be BMW forums for this kind of thing, it is a bit niche and obscure.
So one of the fitters...whatever that description is. And "not a mechanic" randomly said to remove bits of your car, because he doesnt know what it does.
Maybe slap random fitter about a bit and tell him to fix your car.
And were you a guinea pig for this or has this "fitter" done this to other vehicles ?
Maybe slap random fitter about a bit and tell him to fix your car.
And were you a guinea pig for this or has this "fitter" done this to other vehicles ?
keemaklan said:
No, the actuator is on the car. The throttle plate inside the actuator is no longer there. He threw it away once removed!
Well if said idiot cannot fix the car by other means, he needs to go and look for it and refit it to your car, as from what you are saying he has caused this issue.THe throttle plate on a diesel is used for smoothing out regular shutdowns, shutting down the engine in the case of a diesel run-on, and to create intake vacum for proper functioning of the EGR. Not impossible to see that it might bugger about with the engines behaviour if it's asking for intake vacum and airflow and isn't getting it.
He just broke it and chucked it out, the monkey.
He just broke it and chucked it out, the monkey.
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