Hello all!
As I own my VR4 now for some time.. ~ 6 years, finally the time has come do to something to it. To give you some idea of where I want to go to (in relation to foxdie's post): At least to the downpipes in the long term, camshaft I don't know how and don't understand the principle yet, would skip. And if it makes sense at that point maybe the injectors, but no further.
Now there is a lot of information already on this website and on ozvr4, but some of the guides and discussions were quite old.
What really makes me wonder is, that in the very past, everybody said "you need a 3"catback before doing anything else + IC".
And then I read foxdie's sticky and.. its simply not mentioned? Only a de-cat pipe, but de-cat is illegal here. Aiming for a Hi-Flow cat because that I could get probably arranged. Getting a 3" cat-back will be .. tricky. New exhaust must not be louder than the original one and I still need to check how to get this legally done without having a complete emissions test cycle (~4000 Euros) done. So I need to re-evaluate based on the infos I will receive on this post. I do totally understand that a bigger exhaust would be beneficial and is more a necessity if I want to put bigger downpipes on it as the factory cat-back system would bottleneck them + the hi-flow. Any statements about upgrading to 2.75"?
Boost control solenoid: Is there a big difference between a new stock one and the Perrin? Couldn't find much information about this. Will the stock one be sufficient for my plans? Or would you always choose a aftermarket over the stock one for XX reason?
And would you, from todays point of view, add anything to that list or change anything on it? I mean, the list is from 2016.
Now my "personal" requests:
Health of the car seems not too bad. Engine mounts look good, I get some knock while shifting under WOT (think it was a knock count of 2 when shifting from 2nd to 3rd) but none during acceleration itself. After wintertime, the car will have the following upgrades including stuff that has already been done:
- Intercooler
- New TME lifters
- TME Steve clutch upgrade
- Hi Flow cat
- wideband O2
- Pipercross air filter
- Spark plugs + ignition leads
- Metal BOV from an Evo
- New boost solenoid (either stock or aftermarket, depending on the answers here)
- Walbro upgrade (is it already necessary to hotwire it by then? OZVR4 TME Steve is not a fan of hotwiring it, at least he wasn't from that older posts)
- MAYBE a bigger cat-back, depending on the circumstances, have a hole in my stock exhaust where I can easily put my finger into it, without the rest of the rust being removed. (this is a very uncertain point)
So, having someone remote to contact about ECU tune (Cable is on its way!) would be awesome, willing to pay of course. Like, a tutorial at home at first during winter time and maybe another short session with tips when at the dyno, details probably better to be settled via PM. Already found an 4WD dyno in my area as well.
So.. thanks for reading and very keen to receive your replies!
Kind regards