Jump to content
SAU Community

Recommended Posts

OK Update: Cat seems fine as mentioned above. Its 3" in and out but dont know anything else about it. If anyone know any details let me know. Is that the ceramic mesh they talk about inside?

post-33559-1199961654_thumb.jpg

Dont mind the WD40 :P

post-33559-1199961743_thumb.jpg

Checked the Spark Plugs and coil pack (which looked like new to be honest), all seemed fine... pic is below, can anyone tell me what condition they are in like if cars too rich/lean or probs with timing etc??

post-33559-1199961918_thumb.jpg

and the main thing is i am 99% sure i have found the problem!!!!!!

Turbotech boost controller locking nut has rattled loose! so... im guessing its letting the pressure out of there hence not controlling boost properly. Will confirm tomorrow after i drive it to work coz i cbf driving now.

It should of been one of the first things i checked god damn it but oh well at least i didnt have to waste $$$

so it looks like it could be the cat

it is laggy i guess but it has always been like that, under 3.5k it is useless even tho it is standard turbo

in case it is the cat, what is recommended? i hear metal cat is the go but lately a lot of people have had theirs fail

Im planning on getting a catco metal cat...so im quite interested how it failed on other ppl?

It is the same diameter as my exhaust system, however u may be right if its talkin about inside diameter

either way i dont think this is my problem as it was fine before with this cat

Take it to a dyno place and get them to load it up (the wastgate) on boost..if the readout shows a drop off of boost throughout the rev range get someone to hold the wasgate shut with there hand and do another run... if it doesnt drop boost theres your problem.

Cheers

Raz

Im planning on getting a catco metal cat...so im quite interested how it failed on other ppl?

I think the Catco cats with stainless mesh are fine, "Metal cat" is a different brand and supposedly they've had some problems.

^^^ The metalcat cats have been known to collapse on themselves...the catco ones have also had a problem where the whole internal structure comes loose and causes a rattle sound...does not affect performance though unlike the metalcat one...but i have to say that my metal cat works a treat...just hope it stays in one piece....

well it got dynoes at 193rwkw (not where i got it done last time so the 10kw variation is acceptable because of weather/dyno variables etc)

boost tapers off but was assured thats normal for the stock turbo as it wont hold 14psi (not big enough housing)

a couple minor tweaks but yeh basically everything checks out, afr's were a tad lean so they increased to 11.5 or so coz of hot weather

so could just be my head playing with me

well it got dynoes at 193rwkw (not where i got it done last time so the 10kw variation is acceptable because of weather/dyno variables etc)

boost tapers off but was assured thats normal for the stock turbo as it wont hold 14psi (not big enough housing)

a couple minor tweaks but yeh basically everything checks out, afr's were a tad lean so they increased to 11.5 or so coz of hot weather

so could just be my head playing with me

So off to the psychologist now? let us know how he scores you :D

LoL

"Made good motivation down low, with a pretty optimistic top end. Life questioning came on strong, and held flat to mid life crisis. Knock meter was round the 30's, prolly due to premature balding"

LoL

"Made good motivation down low, with a pretty optimistic top end. Life questioning came on strong, and held flat to mid life crisis. Knock meter was round the 30's, prolly due to premature balding"

HAHA, nicely said.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Thank you, 100% the intent. New coils were due and the 17" sixers look/feel loads better than the stock wheels. The aero options are so spot on.   Thanks for the warm welcome, all!
    • 98 r34 gtt Been rocking my latest setup and car running like never before. Have put a good 200 miles on it since all the latest changes and additions. everything is dialed in and have been driving it a bunch.   However, all a sudden last weekend as soon as I pushed throttle passed 4k and the engine stumbles, (slow or fast acceleration) hesitates and doesn’t go above 4100 or so, like a misfire. Everything else seems fine. I had a “good” set of coil packs that I removed from car when I first got it when I changed them over to new coils. I swapped out current ones for those, but no change. I also changed the plugs, no change. Seems to rev over 4 when out of gear with no load just fine no “misfire”, but as soon as its in gear with a load of any kind, it “misfires” as soon as rpm drop back below 4 k it runs perfectly, smooth, starts, restarts and drives fine as long as I keep it below 4 k while in gear. All readings look fine, no CEL   Any idea as to what could all a sudden cause an issue when pushing rpms passed 4 k?
    • When you say your cams are 272/262 is that 272in and 262ex?
    • We're arguing semantics. I am saying 45 accel and a 55 deccel ramp are "2 ways". Even a 45 degree ramp and an 89 degree ramp is "2 ways", because it is literally... two ways. The cusco 55/30 ramp is a 2 way. It's two ways. I get it though - in normal nomenclature a "2 way" would be 45/45 or 55/55 or 60/60 i.e the same locking in both directions. And something like 45/65 would be considered "1.5 way". I would then say if we're getting into the nitty gritty then every locking diff is a "2 way" diff and we should not speak in 1.5, or 2 ways but ramp angles instead. Which ofc if one of those ramp angles is 90deg, that side is not doing any locking. :p So Nismo don't obviously sell 3 things. The fact of the matter that they only sell two items really goes to show that there's a 2 way and a "1,5 way" which is really a 1 way. I believe the actual lockup for the 'adjustability' of the GT pro is really just setting preload for when the ramps actually start locking up. It's not changing how much 'wayness' there is. It is (somehow) horribly explained. People just buy whatever diff and go "locks up good bruh" and that's what ends up on socials forever.  
×
×
  • Create New...