GTI Remap 0-60
Remapping doesn't make the DV woosh any louder, yes there's more charge going through hence the air might be getting diverter into the airbox more often. I recommend changing the DV same time as the map. I'm using the APR one, so far so good.
I've managed according to vag com 6.2 seconds - 100% sure it can be reached quicker (not ideal trying to drive and log at the same time)... take Jeff's e.g. under 6 seconds at times. Granted we both have turbo back exhausts + a little more to improve breathing. A standard car mapped should easily be less than 7secs all day long.
I'm also London based. Do you have your GTI yet?
I've managed according to vag com 6.2 seconds - 100% sure it can be reached quicker (not ideal trying to drive and log at the same time)... take Jeff's e.g. under 6 seconds at times. Granted we both have turbo back exhausts + a little more to improve breathing. A standard car mapped should easily be less than 7secs all day long.
I'm also London based. Do you have your GTI yet?
When I bought my GTI it had already been revo'd....
Performance was very good and really smooth with boost approx 1.1 bar max..
Now I use a stronger more aggressive file which has superb throttle response and quick developing boost with max 1.2 bar... this makes it quicker again than when revo'd..
Sacrifice is a little boost smoothness, you can boost spike at approx 3200rpm so ecu pulls back slighty then goes again. If you look at power graphs of other software you can see this happening. You can see it with VAG-COM logging - It happens with the revo software aswell but not quite as obvious.
I try N75J and N75H soon to see if boost can be smoothed out. As very often it is inability of the N75F to control boost properly on remapped 1.8T.
Will let you guys know how I get on.
Performance was very good and really smooth with boost approx 1.1 bar max..
Now I use a stronger more aggressive file which has superb throttle response and quick developing boost with max 1.2 bar... this makes it quicker again than when revo'd..
Sacrifice is a little boost smoothness, you can boost spike at approx 3200rpm so ecu pulls back slighty then goes again. If you look at power graphs of other software you can see this happening. You can see it with VAG-COM logging - It happens with the revo software aswell but not quite as obvious.
I try N75J and N75H soon to see if boost can be smoothed out. As very often it is inability of the N75F to control boost properly on remapped 1.8T.
Will let you guys know how I get on.
The N75 valve controls the amount of boost using signals from the ecu.
There are different versions of the N75 like N75C, F, H, J, K some are used on other models like S2 or other models in the VAG range.
The different valves respond differently to the signals from the ecu, the J valve is often used to smooth out boost on remapped 1.8T. The H valve (known in some places as RACE valve) can sometimes smooth out and give a few PSI more boost.
Jeff when you put on your TIP you would habe handled the N75, a small cylindrical part plumbed to the TIP with two small hoses connected and electrical connection.
J
There are different versions of the N75 like N75C, F, H, J, K some are used on other models like S2 or other models in the VAG range.
The different valves respond differently to the signals from the ecu, the J valve is often used to smooth out boost on remapped 1.8T. The H valve (known in some places as RACE valve) can sometimes smooth out and give a few PSI more boost.
Jeff when you put on your TIP you would habe handled the N75, a small cylindrical part plumbed to the TIP with two small hoses connected and electrical connection.
J
theres 2 on e bay at the min, and its the h valve saying its the race one, not the j valve mate
im interested in smoothing out my power delivery mate, but a little more boost would be a nice bonus too, which it says is offered by the h valve, where the j just smooths it
but which is best, does one get a better rating that another? which is the valve of choice, also, we know the advantages, whats its disadvantages?
im interested in smoothing out my power delivery mate, but a little more boost would be a nice bonus too, which it says is offered by the h valve, where the j just smooths it
but which is best, does one get a better rating that another? which is the valve of choice, also, we know the advantages, whats its disadvantages?
just pulled this off the e38 forums, this guy says he is having a sudden loss of boost in his 20vt...
The n75j is a common fault on the 20v and will create boost problems
can anyone else elaborate or know if the h valve is better?
yet on uk mkiv's, it seems the n75j is the valve of choice????
also someone on uk mkiv's mentions it gives the feel of more power but you actually lose power as although you get more initial boost up to 4000 rpm, boost is backed off by the ecu so meaning a loss in power overall
i cant grasp a simple answer from any of it, ouck my head hurts, im confused
im defo feeling boost spiking though and would like to eliminate it without losing power overall !!
The n75j is a common fault on the 20v and will create boost problems
can anyone else elaborate or know if the h valve is better?
yet on uk mkiv's, it seems the n75j is the valve of choice????
also someone on uk mkiv's mentions it gives the feel of more power but you actually lose power as although you get more initial boost up to 4000 rpm, boost is backed off by the ecu so meaning a loss in power overall
i cant grasp a simple answer from any of it, ouck my head hurts, im confused
im defo feeling boost spiking though and would like to eliminate it without losing power overall !!
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gti-joe
- Silver Member
- Posts: 343
- Joined: Tue Mar 06, 2007 6:11 pm
- Drives: 6c Polo Blue GT
- Location: Edinburgh
Try this forum Jeff. Put N75 into there search facility and a few threads come up. Or the guys at Awesome maybe able to advise you.
http://www.vag20v.net/forums/index.php?
http://www.vag20v.net/forums/index.php?
