Jump to content
SAU Community

Help: R33 Tune Problems

EVL-R33

By EVL-R33,
in Engines & Forced Induction

 Share

Recommended Posts

EVL-R33 Proficient

EVL-R33

Posted
Posted (edited)

Ok, so I got my R33 RB25DET back from the tuner with a new turbo installation with the following:

Mods:

Garrett 3037 turbo

Top mount manifold

SARD 550cc Injectors

Bosch 023 Fuel Pump

Plazmaman intake plenum

FMIC

Profec B Spec II BC

PFC

and more supporting mods...

Although they done a good job with the turbo/piping installation, the tune im not too happy with and need some advice on.

Problems: When my car is cold, the revs surge from around 1300 to 1800rpm (this goes away when the car warms up), the tuner said he had no idea why this is happening and mentioned that the PFC doesnt have a cold start tuning option (if this makes any sense)?

The other thing he said was at high revs it knocked too much, so he reduced the timing right down to around 15deg IGN timing and now its very sluggish. He said that getting a high flow cat might fix this problem?

Anyone had any similar problems?

Cheers.

PS. I just checked the Injector latencies on PaulR33s PFC docs, and im not sure if the tuner set mine correctly, they read 70% and -1.30ms, souldnt they be 67% and +0.052 for SARD 550cc in RB25DET?

Edited by EVL-R33
Link to comment
https://www.sau.com.au/forums/topic/265840-help-r33-tune-problems/
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Sounds like a shit tuner to me for one thing

The fact they state a PFC doesnt have a tuneable cold start is pathetic - you can do it via datalogit.

Either way, it wont be related to cold start on the actual ECU.

It'll be a leaky VAC hose somewhere, or a stuffed O2 sensor. Likely the first option

What exhaust do you have now? If you have a 3037 and do not have a serious flowing CAT - then it begs the question of what other mods are lacking as well.

Double edge sword here i think.

1. Average tuner

2. Average parts/setup by the owner

Both equating to an average setup.

femno Grand Master

femno

Posted
Posted

He probably didnt do the stable idle procedure either.

You can put in temp correction through the hand controller from memory, so no excuses for that.

It was knocking so he reduced IGN to 15. Overall at the cas or in the map? Sounds like he just moved the cas, as removing timing from up top shouldnt make it sluggish.

What cat do you have?

EVL-R33 Proficient

EVL-R33

Posted
  • Author
Posted

Hey guys thanks for the replies.

I have a stock cat, and he actually though that might be one of the reasons for the knocking, he did ask me to get a highflow and take it back for a re-tune at no extra cost.

R31Nismoid, I got a 38mm external gate setup (Tial gate) and the 3037 has a 0.63rear avo rear housing, and I'm hoping that the cat is the problem behind the knocking, but as for the cold start, I'm hoping he will give it another go and fix that problem too.

The other thing I just remembered is that I dont have an oil catch can, they plumed it back, would this cause any knocking?

It probably wont show much but I added a pic below of the setup.

post-39257-1239949957_thumb.jpg

paulr33 Grand Master

paulr33

Posted
Posted

if it needs 15deg on max load to stop pining some may be wrong

ie cas is off set, base timing is whack, cam gear is whack and so on

check the basics with a timing light

this is a must for anyworkshop

do a base dyno run

check timing

THEN tune and adjust away

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

    • The Bogan
      NC MX5

      By The Bogan · Posted

      So, version 4 intake is on its way I was looking at these a while ago but at around $200 or more it was a little pricey for something that might not work, but, I had it in my watch list, but, I got a message saying it was on special, and I had a code thingie to use, it eventually came in at $120 delivered, so BAM, BUY NOW.....LOL I'll need to have a look when it arrives but I feel it will "look" better than what I currently have, as it comes with a PCV fitting, so I will be able to get rid of the alloy pipe that goes to the throttle body with the PCV fitting  Well, that's what the voices in my head are telling me  Oh, and this happened today Yeap, it was a Trojan, and it was cheap, so I headed back to the hardware store and actually spent a little bit more on a heavy duty,  one that was actually recommended by a plumber mate, a Cyclone one with a fibreglass handle that is actually rated for clay The broken shovel will eventually be "modified" into a short handle shovel
    • MBS206
      What should I do next to hold the head on

      By MBS206 · Posted

      When you pulled it off, there is no signs of blown head gasket? Is it possible you have some other issues going on? Possible cracked blocked? Or do you think it's straight up lifting the head? Did you check what the head was torqued to before pulling it down (To see if possibly they're stretching, or starting to break threads out etc)?
    • jez NF
      The Evolution Of "night Fury"

      By jez NF · Posted

    • Rezz
      Chris' Toyota Mark ii JZX110

      By Rezz · Posted

      Seems like a decent result for a modded JZX110. They are bulky in comparison to the 100 and 90 models (which I'd prefer myself) but they are getting very few and far between here in JP these days. Thanks for the detailed review and the import process into the UK. I also have a car which I'm hoping to export from Japan at some stage so it's good to know if someone from the UK was interested in it. By the way the corrosion underneath is par for the course for cars which were located in/near the mountains or along the Japan sea coastline. They get huge amounts of snow every winter and the sodium chloride is used on the roads. Many cars have some kind of rubber like treatment underneath but they tend to limit it to the wheel arches underbody and fuel tank. Suspension arms and sub-frames will have similar corrosion to your JZX110 which is a common sight. See it all the time and car dealers here generally don't even mention it unless asked.
    • Kinkstaah
      new 1.5 LSD issues/concerns

      By Kinkstaah · Posted

      If the sound goes away when you clutch in, the 1.5/2 way diffs are just shit, and you are a normal person. The diff is likely "fine" but driving at anything under 30kmh is a violent horrible experience. It would be exaggerated with solid diff bushings and subframe bushings if you have those.
×
×
  • Create New...