Jump to content
SAU Community

Car Lost 80hp And 5psi Boost

Guilt-Toy

By Guilt-Toy,
in Engines & Forced Induction

 Share

Recommended Posts

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

Had a issue with my car for the last few months, was chasing boost leaks, looking at blow off valve leaking etc etc....

Never really put much effort into it untill last week when i put the car on the dyno and found the issue after a few runs....

Had 5 runs on the dyno all were showing around 15psi and 330 - 340 rwhp after changing all the cooler hose clamps and some silicons, cleaned out the intercooler etc etc....

Took the air filter off to inspect the turbo to make sure it is still in good condition, decided to do one more run before giving up and going back to the drawing board....

Next run showed 20psi and 405rwhp straight away, a gain in 75 horse power at the rear wheels and 5psi boost!!! because the air filter was not attached! (boost was so much higher that it blew the boost line off for the dyno)

post-1240-1270413524_thumb.jpg

The city in Georgia is sooo dirty that this poor filter got clocked soo bad that it was restricting the GT35r soo much it was choking the hell out of it!

I have cleaned the filter about 3 times in the last 6 months but obviously I was not cleaning it good enough and it was still blocked.

So far I have managed to clean it to give me 20psi of boost but the power is still down so looks like a new filter will need to be imported!

Thought I would share this with everyone, its amazing how much power you can lose from a dirty air filter!

Might pay to dyno your car with the filter removed just to see how much restriction is actually there!

Link to comment
https://www.sau.com.au/forums/topic/315245-car-lost-80hp-and-5psi-boost/
Share on other sites
Guilt-Toy Grand Master

Guilt-Toy

Posted
  • Author
Posted

actually its just the dirt and dust on the roads, especially when it rains and the position i had the filter would not have been helping (in the front gaurd)

This country is actually pretty clean, not much smog and polution etc etc. its just the dirt and dust on the roads and everywhere that kills it...

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

    • Kapr
      ECU sees many times the speed than speedo does (R34 swap)

      By Kapr · Posted

      Hi. This is just my curiosity because iam sure the tuner figure something out...but either way i want to ask. The "problem" is that the Nistune ECU (Stagea FW and RB25DET NEO from Stagea) sees many times the speed than the speedo does(he says the speedo show 120 km/h - correct speed and the ECU shows like 510km/h ) I told him that this car/tranny getting speed from rear diff. If iam not mistaken the RB25DET NEO "need" to see tranny speed sensor? (my tranny has the plug for it). So couple of "question" If he connects/wire the speed sensor to the tranny...are the signals gonna intervene and if...what if he disconnects the rear diff one and the speedo stops working? Or the "new" sensor from the tranny "take over" and will not going need the one from diff? As i said i know he figure/get that done...iam just curious to know what are the solutions 🙂 
    • MBS206
      R32 GTS (RB20DE) Injectors Replacement

      By MBS206 · Posted

      Your IACV is set to idle too low. You need to adjust it via the screw Duncan mentioned. From memory it should be 650rpm with the valve electrics unplugged. What is it trying to idle at with the IACV plugged in?
    • MBS206
      Duncan's V37.......race car?

      By MBS206 · Posted

      Ahhh, I need the whole head unit. I definitely needed to roll back through and review your setup, ha ha! Neat setup they have going on. I just need a full double din head unit. But I want good and responsive. I might have to review what the likes of pioneer have out these days.
    • albyz34gt
      34 de+t conversion using s2 stagea automatic transmission, engine harness and ecu

      By albyz34gt · Posted

      Ok so after much research and talking with knowledgeable people I've got my turbo conversion done and it's all running great other than 1 small issue.  Car has remained auto with the na auto and tcm, I've used a stagea ecu with. NIstune board and everything is great other than my gear selection on the dash. It illuminates park, reverse, neutral, 3rd and 2nd. But nothing drive or what gear your in when you pop it into tiptronic.  I'm sure there is may e 1 wire in the ecu plug I need to move to rectify this. Dose anyone here have any ideas?   Cheers guys
    • Duncan
      R32 GTS (RB20DE) Injectors Replacement

      By Duncan · Posted

      Sorry I haven't been following all the detail, so you may have tried this. Does it idle with the tiniest bit of throttle you can add? You've mentioned the IACV, does it have an AAC valve and have you adjusted it at all (ie, screw the idle adjust screw all the way in, then back it out a couple of turns until idle is stable)?
×
×
  • Create New...