I got in my standard Manual JDM TT today after not driving it for 3 weeks. It felt different, it was boosting very strongly going upto the MAX +7 on the boost guage. I am not sure if this is normal, but usualy it only goes halfway to 3.5.

 

I put it down to the cold air at first, but after 15 minutes it went back to normal.

 

Now I am guessing I have got used to safety boost, the ECU had reset itself but after a bit of driving it went back to safety boost....

 

I have had 2 other TT's one was standard auto, and the other was modified with about 380bhp so I don't have much to compare it to...

 

It is definately quicker than my old NA which is why I didn't think of safety boost.

 

What do you think?

Edited February 1, 200916 yr by Stevie007

Don't want to hijack the thread but I also have the same, always get full boost for the first 10 to 15 mins then drops to +5 when warm.

 

:(

 

I am starting to wonder if my intercooler pipes may be the issue.

Wondering if the det sensor or harness is breaking down when it gets hot. You need to do a ecu check. If you went into safty boost it should stay in SB untill its cleared from the memory or a multitude of engine starts (35 i think) wipes it out.

Just thought if you have had the batt disconected for more than 20 mins it will also reset the ecu.

 

Allan

Edited February 1, 200916 yr by gruntpa64

Yeah do an ecu test, if it comes back code 34 then your knock sensor wire/connection is the fault, there is a guide on here somewhere on how to do a quick test by shorting two wires together, the ecu light on the dash will begin to flash indicatning any fault codes that you may have. Code 55 is all good, the first long flashes are the first digit and the second short ones are the second digits. for example if you get 3 long flashes followed by 4 short flashes thats code 34.

 

heres an example vid that murt posted recently. he had code 13 and 21

 

[YOUTUBE]bYDumTEUfok[/YOUTUBE]

 

 

here are some links on how to perform an ecu test very simple.

 

method 1 - http://www.ttzd.com/tech/diagnostictech.html

 

method 2 - http://www.twinturbo.net/ttnetfaq/FA...agnostics.html

Edited February 1, 200916 yr by j1mmytt

Let`s not all forget, you could have timing / fueling issues that`s causing detonation (not always heard ) and hence the system is doing exactly what it is designed to do ie put the engine in safety boost mode.

 

Jeff TT

Let`s not all forget, you could have timing / fueling issues that`s causing detonation (not always heard ) and hence the system is doing exactly what it is designed to do ie put the engine in safety boost mode.

 

Jeff TT

 

Thats what ya here for ;)

I had the same problem. It didn't seem to matter if it was freezing cold or a hot sunny day, Shell V-power or 95ron. Around 3250rpm on full throttle on a motorway in 5th gear would ALWAYS drop it into safety boost even though no det was audible at all.

 

You could drive round the problem, drop a gear and floor it or no more than 50% throttle untill 3500 then open it up.

 

In the end I did the 1M ohm resistor in the engine bay (not ecu end) and that seems to have done the trick.

 

So either I had a faulty harness or there genuinely had det. I guess I'll find out one way or another :D

One for jeff....

What caused this lol

I dont know that one Jimmy but can I have the half a donut thats left on the kitchen side?

Yeah do an ecu test, if it comes back code 34 then your knock sensor wire/connection is the fault, there is a guide on here somewhere on how to do a quick test by shorting two wires together, the ecu light on the dash will begin to flash indicatning any fault codes that you may have. Code 55 is all good, the first long flashes are the first digit and the second short ones are the second digits. for example if you get 3 long flashes followed by 4 short flashes thats code 34.

 

heres an example vid that murt posted recently. he had code 13 and 21

 

[YOUTUBE]bYDumTEUfok[/YOUTUBE]

 

 

here are some links on how to perform an ecu test very simple.

 

method 1 - http://www.ttzd.com/tech/diagnostictech.html

 

method 2 - http://www.twinturbo.net/ttnetfaq/FA...agnostics.html

 

Big thanks for that Jimmy - I just did my first ECU check! problem is i got error code 55 - which looks like everything is AOK...

 

so how come the increased performance all of a sudden?

One for jeff....

What caused this lol

 

 

Major overheat?

 

Jeff TT

Major overheat?

 

Jeff TT

 

Duno thats why im asking you lol. Think I had a Major detonation problem at some point.

 

Big thanks for that Jimmy - I just did my first ECU check! problem is i got error code 55 - which looks like everything is AOK...

 

so how come the increased performance all of a sudden?

 

Maybe coz the weather is soo cold your not detting and reverting to safety boost as you would have in the summer. Have someone drive it who is familiar with the sound of detonation.

Edited February 1, 200916 yr by j1mmytt