Jump to content
SAU Community

R33 intermittent loss of power.

Redknight

By Redknight,
in General Maintenance

 Share

Recommended Posts

Redknight Explorer

Redknight

Posted
Posted
R33 intermittent loss of power.

R33 intermittent loss of power.

Hi guys. 

I have an R33 gtst series 1.5 

List of mods

Full high Flow xforce exhaust 

K&N pod filter whith heat shield 

Blitz front mount intercooler 

Spit fire coils

New spark plugs ( unsure of brand) 

Power fc tuned by legend matt spry

Z32 airflow meter

Stock turbo running 13 pounds 

Car is making over 200kW at wheels

I have several issues. There are days when my car feels nice and responsive and goes like a bat out of hell. And there are days when I feel like I've lost about 30 hp through my mid range top end power. At times my accelerator feels less responsive / sluggish and boost doesn't feel like it comes on hard. Also the car back fires and splutters at times and feels like the car is vibrating and shaking slightly when at idle..but not always.

At times it feels like boost is flowing through a McDonald's straw. 

Now the other strange issue is sometimes when I stab the throttle to rev match the car will bog down but not always.  It's very inconsistent. And my fuel economy is terrible. 

I have also noticed some oil leaking from intake manifold. I was advised it could be a sqaushed gasket causing boost leak?

Only strange thing matt spry saw on the dyno was the 02 sensor was crapping out when the car is cold and dumping crap load of fuel but fixes itself when it warms up. 

Could it be piston or valve issue guys?

Problem is extremely frustrating and has been happening since I've owned the car. I just want my pride and joy to be running 100%

Any help would be appreciated guys.

 

Link to comment
https://www.sau.com.au/forums/topic/466646-r33-intermittent-loss-of-power/
Share on other sites
89CAL Grand Master

89CAL

Posted
Posted

The ECU dumps more fuel in when it is cold. Have you done a compression test? Tested for boost leaks? Checked to make sure the turbo is healthy? Checked for exhaust restrictions? CAS in good order?

You need to have a bit of a look at a few things I think.

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Rezz
      First time Skyline owner

      By Rezz · Posted

      Echo the awesome sentiment 👍 Definitely a car worth saving. Looking forward to seeing updates as well. 
    • Matt Z
      SAU NSW - Chickos Cruise

      By Matt Z · Posted

      Scenic roads, stunning skylines, and Chickos to finish it off! Join SAU NSW as we cruise through the Royal National Park and along Lawrence Hargrave Drive to Figtree! Sunday 26th October 2025 4:30PM Meeting Waterfall Station Parking 5:00PM Cruise Departure Royal National Park > Lawrence Hargrave Dr > Memorial Dr > Sid Parrish Park 6:15PM Arrival at Sid Parrish Park Figtree Meet Location: Waterfall Station Parking Final Destination: Sid Parrish Park RSVP: https://forms.gle/E4s5SiRKQfDdypky8 *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • MBS206
      "Cheap" bolt on turbo on RB25DET NEO

      By MBS206 · Posted

      It's funny, as Ive seen plenty of people use them in cheap builds on YT. And they actually go okay, even though a lot of other maxspeedingrods stuff is terrible. Those turbos seem reliable enough, the only part being, a good quality turbo that is "identical" to it, will out perform it day in and day out. In both a lower boost threshold, and the ability to flow more air at the same boost pressure. As a cheap cheap replacement, not a terrible choice. For cheap and shouldn't blow in a day, not terrible (like other eBay/Temu turbos) for low cost and still decent performance, that's where the question comes in to play from the results I've seen. I'd actually find it hilarious to buy one, and strap it to a paddock basher or some other cheap as POS originally NA car, and send it to the moon!
    • tylink720
      "Cheap" bolt on turbo on RB25DET NEO

      By tylink720 · Posted

      The maxpeedingrods turbo is cheap and bolts on to stock parts. I think you just need a bigger silicone coupler for the intake. Its a cheap china turbo, but it's been running on mine for almost 3 years at 16-19 psi.
    • MBS206
      Strange issue RB25DET wont start

      By MBS206 · Posted

      What do they look like right after you've tried to start it with everything connected? Also post photos of what they actually look like.
×
×
  • Create New...