blitz

Today I'm goin' to change the oil and the track is right next to this garage so I'll test it there again. I also think that it might be the O2 sensor!
Results and video later today wink1.gif

http://www.youtube.com/watch?v=TGhIW_UKJDI

This is the video of the night that I'm talking about wink1.gif Hopefully you can help more now smile.gif

Stocker

Don't get complicated before you need to! If the car is slower on the same track under similar weather conditions after you change X then suspect X before you suspect Y!

blitz

There will be drag night this sunday and we'll see how the car is running wink1.gif Hopefully a little better than the last time hail.gif

mrrock

I'll tell you the problem straight away. The final drive ratio is shorter on on the 1.8. So, that's why you are getting a flat spot in third gear.

Stocker

How did we get from a cam shaft to a final drive ratio?

blitz

Stocker, I'm thinking exactly the same smile.gif

What do u think about my acceleration in this video ?

Stocker

I think my laptop only has 128MB of RAM and I have every non-essential service and function switched off to save memory . . . no video watchin' for me 02.gif

mrrock

The 1.8 engine has a different response curve which is matched by it's gearing. By installing a rougher cam, you lose bottom end torque in the rpm range. That is why I mentioned gearing. The 2litre has a longer final drive ratio as it has a smoother cam and more torque down low.

lilo shark

well, get the 1.8 ecu. make sure its the right one.

blitz

So mrrock, what do u suggest? To put my 2.0 cam back or as lilo shark said to get 1.8 ecu? I think it's better to chip it than to put 1.8 ecu...