I have the folowing questions.
1.What is this in the white circle?
Is that threaded hole for the lamda sensor?
As i run a GEMS ecu which doesn't use a lamda.Do i just tighten that bolt ,already in place,up?
Will it come loose if i just tighten it up?
2.What is this in the red circle?
Do i fit i bolt in it to blank it off?
3.Is this up pipe any good as i got sent it instead of a Helix up pipe?
4.Is this the right one to go with the Gruppe S headers i got from Flatfour to fit on to my STI 8 type UK
Thanks for any reply before i wrap the whole thing.