Has anyone Tuned the new CTH engine?

**PGTI** · 06-04-2013, 08:09 AM

Hi guys.
I'm booked with Apr to try and tune the new Gti CTH engine.
Just wondering as anyone successfully tuned this engine?

**BLN355** · 06-04-2013, 11:05 AM

Can't see why it'd be any different to the CAVE, they are the same design just re-designed pistons/rings aren't they?
Either way it'll be good to see the results

**noone** · 06-04-2013, 11:18 AM

Being sold as the same car? Dual charge? Can't imagine the numbers will differ much.
Hopefully the biggest numbers you'll notice is the lack of L's of oil required to keep it moving.

**PGTI** · 06-04-2013, 11:28 AM

Originally Posted by BLN355

Can't see why it'd be any different to the CAVE, they are the same design just re-designed pistons/rings aren't they?
Either way it'll be good to see the results

I spoke with Guy from APR and they have not successfully been able to tune one yet. I am going down to try and do it in two stages. Pull the software details for the engine and ecu and send it to APR USA for their opinion and then go back a week later to install the tune if they say it will work.

It will be a bummer if they can't as I want to put the exhaust on also. Either way I will install the CAI and intercooler.
I don't know if the other tuners have cracked it yet either Viezu or others.

**noone** · 06-04-2013, 11:30 AM

Sounds like a change to the ECU, trouble getting in / being undetected.

**gavs** · 06-04-2013, 04:14 PM

All are detectable, I believe that the latest iteration of the MED17.5.5 'anti tune' ecu is installed with the CTHE motor.

**AC74** · 07-04-2013, 08:18 PM

Originally Posted by gavs

All are detectable, I believe that the latest iteration of the MED17.5.5 'anti tune' ecu is installed with the CTHE motor.

Originally Posted by PGTI

I spoke with Guy from APR and they have not successfully been able to tune one yet. I am going down to try and do it in two stages. Pull the software details for the engine and ecu and send it to APR USA for their opinion and then go back a week later to install the tune if they say it will work.

It will be a bummer if they can't as I want to put the exhaust on also. Either way I will install the CAI and intercooler.
I don't know if the other tuners have cracked it yet either Viezu or others.

Damn! I didn't even consider that my MY13 GTI couldn't take a tune. What a crock... Too many lawyers getting a say at car companies these days.

**gavs** · 08-04-2013, 11:29 AM

There is murmurs about several aftermarket parts companies investigating legal sanctions against VGA specifically due to their warranty statements regarding the use of non-genuine parts, this also extends to tuning companies....

**PGTI** · 08-04-2013, 07:39 PM

Originally Posted by AC74

Damn! I didn't even consider that my MY13 GTI couldn't take a tune. What a crock... Too many lawyers getting a say at car companies these days.

Don't worry spoke with Guy again today. It will be able to be tuned. It may be a couple of weeks to a month away. It will be the same tune as the CAVE engine. They just need to sort the encryption on the new ecu. It was the same when the audi A3 came out and they can now tune that car. I'll let you know more after the have my car on Wednesday.

**AC74** · 08-04-2013, 09:55 PM

Originally Posted by PGTI

Don't worry spoke with Guy again today. It will be able to be tuned. It may be a couple of weeks to a month away. It will be the same tune as the CAVE engine. They just need to sort the encryption on the new ecu. It was the same when the audi A3 came out and they can now tune that car. I'll let you know more after the have my car on Wednesday.

That sounds a bit more promising. I'm tipping Guy will have cracked the ECU encryption before I rustle up the $$ for a tune anyway!