D350z

Thank you for the heads up. Waxoil was what I used on my MG and Alfa Romeos back in the day but I’m happy to use any make of treatment. I’m sure the local garage that will be spraying it on will be happy to us any make. I’ll do some research, It doesn’t get treated until next Saturday. I’ve had a look under the car and it’s really clean. Even the W brace is still black with paint and not rusty on the edges. It’s definitely been treated before and there is evidence of previous under body gunge.

Okay, okay. I've reset the cap positions and alligned everything N,S,E,W as you guys have pointed out. It's in for a Waxoil treatment next, then I'll tidy up the interior with replacement parts from Z Man Alex and finally it will get a partial respray in September 😋 Once that is done I'll have a really tidy, unmodified 350z on low mileage to enjoy.

Thanks. I used this: https://amzn.eu/d/5FQj8Qb

I should have done it years ago but I diddn't. I've finally got rid of 15 years of grime under the bonnet. The greasy, sticky, oily stuff thas was coating everything certainly kept it all corrosion free. I'm going to tackle the underneith of the car next. My car is completely stock with fairly low mileage and I've decided to keep it that way. I love it just the way it is. The prices seem to be rising a bit for an unmodified 350z so I'll hang onto it for a few more years and enjoy some fair weather driving

I enjoyed this read. I lost an hour of my life but feel inspired to tackle some of the things that need sorting on my 350z. I was going to sell it but now I'm going to keep it and enjoy it for a few more years. Thanks for writing up your exploits with your Z. It all looks fabulous. By the way, how is the black paint on the plenum holding up? I've scrubbed the aluminium oxide off mine but it looks dull and dirty.

I had the same issue. I did the pin push thing and I thought I'd fixed it but I hadn't. The problem was the black (grey) clip on multi jet was full of black bits. I used blue tack to cover the little jets except the end one and I used another bit of blue tack to help seal the nozzle of a compressed air can on the end. I gave it a blast and loads of flakes of black stuff came out. A bit like small pieces of rubber. I then re clipped on the black jets to the wiper arm, connected the t piece and it now works like a charm.

I've done nothing yet as I've been busy on assignment. I'll probably have an exhaust specialist add a silencer or replace the one in the resonated bit of pipe with a more effective one. He or she may have a better idea though so I'll see what they say.

Fabulous advice- Thank you

Thanks. Am I right in thinking I can keep the Cobra Y piece and then just swap out the back two pieces for a decent exhaust?

I certainly can't live with the Cobra. What sounds better, Militek or stock?

Yep. It's driving me mad too. £650 wasted I'll either go back to stock or have the inline silencer section (resonated) changed for something more substantial. The drone is shocking and I suppose if the Cobra system sound was good they could charge more for it.

Thanks for this. I might just change the back box for the Militek or Invidia and leave the Y pipe, front silencer etc in place. I'll check out my options.

Thanks, overall I'm happy with the sound quality and the volume at all revs except between 2000 - 2600 rpm. Thats when it booooms. I might just need to change one box rather than the whole system. I've done 1k miles now and it is damping down a bit now that it's coking up for your reply

Thank you Randy. Soundproofing is my next step. It seems a shame that resonance can’t be dealt with in exhaust design. The lovely top notes are fine it’s just the boom that’s the issue.

Thanks Reecybeaney. Mine sounds like a big hollow box with a deep drone. Yes the top notes and raspiness are good but when the throttle opens up just a bit the drone switches on.