Jump to content
SAU Community

Recommended Posts

Hey guys,

I just got my R33 back from my tuner this arvo after he fitted up a 'Slide' highflow and Power FC. And to my dissapointment the car only made 240hp... I have all the supporting mods, exhaust, FMIC, 040 fuel pump, adj. cam gears, elec boost control etc.

TO be honest it doesnt even feel as though ive gained any more power than what i had before it went in. The only difference is that the car is a bit smoother to drive.

Its running around 15psi at the moment because i have stock bov and it started leaking at 16psi.

He recommended upgrade bov, fuel reg, injectors and up the boost to around 18psi. Correct?

Is this roughly the power i should expect from my mods or is something wrong there?

Cheers :P

Link to comment
https://www.sau.com.au/forums/topic/191616-240hp-is-this-right/
Share on other sites

dude thats crap ( no offence) but 240 rwhp is like 180 rwk. at 15 pound on that turbo you should be expecting atleast 220 rwk which is like 300rwhp.

i think your injectors are letting you down.....but in another case i made 209rwk on 13 psi with the same setup as you.

maybe your bov is leaking more than you suspect, if not call slide

hope u get it all sorted

Edited by R33GOD

sounds wrong to me mate. thats about 178kw. my 33 made that with just a FMIC, exhaust and 10psi boost on the stock turbo.

next i fitted the pfc and 040 and got 201kw.

now ive got a hiflow, fuel reg and z32 afm and my tuner is confident he will get about 240kw out of it.

what are your a/f ratios?

Not sure?

I was given a printout from the Dyno run but that was it.

post-25513-1193823323_thumb.jpg

I didnt think it was right. Id had a long day and it was like 6pm when i picked the car up so didnt even think to question what he'd told me. Me thinks i should give him a call tomorrow...

The power is absolutely horrible past 5500rpm, and your boost level trails off to 13psi. I don't know why a workshop would let a customer take a car out like that.

You need upgraded injectors and AFM. Stock fuel pressure regulator is fine.

Edited by govich
yeah z32 and injectors. i got 242rwhp with zorst, fmic, bov, boost controller and before power fc, fuel pump, z32. got them on after then ran 205rwkw on bout 10 psi.
The power is absolutely horrible past 5500rpm, and your boost level trails off to 13psi. I don't know why a workshop would let a customer take a car out like that.

You need upgraded injectors and AFM. Stock fuel pressure regulator is fine.

I can see this was done on matty sprys dyno and his is known to read from 15rwkw less than "other" dyno's, anyone can make it read 200kw but he doesnt, and he also is just a full time tuner not a designated fitting workshop

I can see this was done on matty sprys dyno and his is known to read from 15rwkw less than "other" dyno's, anyone can make it read 200kw but he doesnt, and he also is just a full time tuner not a designated fitting workshop

That wasn't my point, i mean the shape of the graph not the peak number. It should be a smooth curve peaking at way higher rpm. I certainly hope that's not his best effort as a full time tuner..

Edited by govich

if he fixes the leak in his stock bov the curve would also be smoother. i think its an air fuel problem. perhaps get another rb25 afm and see if it helps. get a printout of your a/f ratios. if its too rich as one of my dyno's were in the past it wont make much power.

if he cant find the problem take it to another tuner

That wasn't my point, i mean the shape of the graph not the peak number. It should be a smooth curve peaking at way higher rpm. I certainly hope that's not his best effort as a full time tuner..

It cant peak at higher rpm, with the boost dropping off at higher rpm, dont pass the blame to the tuner as he can only do what the car can produce...

you would've maxed out your AFM, theres nothing your tuner could have done about that. i noticed my AFM maxing out at 14psi but with the emanage i can clamp my AFM voltages, you dont have that option with the PFC. get a z32 afm and see how you go.

also ask your tuner what your base timing was.

You can tune past the AFM limit, so i dont see that as a problem, seen it done many many times by decent tuners.

Poses no real issue either.

So... poor top end you have there unfortunately, and also some boost control issues.

So its a few things here

The tune could be shit. I dont care "whos" dyno it is or that it "reads lower" than others.

The graph does not lie and there is a clear issue at the top end. Any tuner that lets a car least a workshop like that should be appalled to be honest.

I would be asking the question of what's going on in the top end. It doesn't look boost related as the drop-off is reasonably smooth from 15.5-12psi, so the power curve should just taper off, not move around like a Richter scale in an earthquake

1. Better boost control/exhaust will help keep the boost flat @ 15psi like it should sit.

2. Ask the tuner what is going on in the top end and why it was left like that.

3. Post back with the reasons/suggestions from them and we'll see what the deal is.

Cheers.

You can tune past the AFM limit, so i dont see that as a problem, seen it done many many times by decent tuners.

Poses no real issue either.

So... poor top end you have there unfortunately, and also some boost control issues.

So its a few things here

Cheers.

surely most boost controllers can hold 15 pound? i had the same problem a while ago, i changed my standard actuator to a hks one. much better :D

Totally depends on the controller, application, installation etc.

By better boost control, i mean just that.

-A re-config of the EBC

-refitting possibly

-new EBC (could be damgaged)

-adjusting actuators etc etc.

Better boost control didnt just mean purchase a new EBC dude, there are many factors and it covers anything that relates really.

Its not just a case of its "just not working", there is usually a reason(s) why it wont work as designed

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

    • Well, apparently they do fit, however this wont be a problem if not because the car will be stationary while i do the suspension work. I was just going to use the 16's to roll the old girl around if I needed to. I just need to get the E90 back on the road first. Yes! I'm a believer! 🙌 So, I contacted them because the site kinda sucks and I was really confused about what I'd need. They put together a package for me and because I was spraying all the seat surfaces and not doing spot fixes I decided not to send them a headrest to colour match, I just used their colour on file (and it was spot on).  I got some heavy duty cleaner, 1L of colour, a small bottle of dye hardener and a small bottle of the dye top coat. I also got a spray gun as I needed a larger nozzle than the gun I had and it was only $40 extra. From memory the total was ~$450 ish. Its not cheap but the result is awesome. They did add repair bits and pieces to the quote originally and the cost came down significantly when I said I didn't need any repair products. I did it over a weekend. The only issues I had were my own; I forgot to mix the hardener into the dye two coats but I had enough dye for 2 more coats with the hardener. I also just used up all the dye because why not and i rushed the last coat which gave me some runs. Thankfully the runs are under the headrests. The gun pattern wasn't great, very round and would have been better if it was a line. It made it a little tricky to get consistent coverage and I think having done the extra coats probably helped conceal any coverage issues. I contacted them again a few months later so I could get our X5 done (who the f**k thought white leather was a good idea for a family car?!) and they said they had some training to do in Sydney and I could get a reduced rate on the leather fix in the X5 if I let them demo their product on our car. So I agreed. When I took Bec in the E39 to pick it up, I showed them the job I'd done in my car and they were all (students included) really impressed. Note that they said the runs I created could be fixed easily at the time with a brush or an air compressor gun. So, now with the two cars done I can absolutely recommend Colourlock.  I'll take pics of both interiors and create a new thread.
    • Power is fed to the ECU when the ignition switch is switched to IGN, at terminal 58. That same wire also connects to the ECCS relay to provide both the coil power and the contact side. When the ECU sees power at 58 it switches 16 to earth, which pulls the ECCS relay on, which feeds main power into the ECU and also to a bunch of other things. None of this is directly involved in the fuel pump - it just has to happen first. The ECU will pull terminal 18 to earth when it wants the fuel pump to run. This allows the fuel pump relay to pull in, which switches power on into the rest of the fuel pump control equipment. The fuel pump control regulator is controlled from terminal 104 on the ECU and is switched high or low depending on whether the ECU thinks the pump needs to run high or low. (I don't know which way around that is, and it really doesn't matter right now). The fuel pump control reg is really just a resistor that controls how the power through the pump goes to earth. Either straight to earth, or via the resistor. This part doesn't matter much to us today. The power to the fuel pump relay comes from one of the switched wires from the IGN switch and fusebox that is not shown off to the left of this page. That power runs the fuel pump relay coil and a number of other engine peripherals. Those peripherals don't really matter. All that matters is that there should be power available at the relay when the key is in the right position. At least - I think it's switched. If it's not switched, then power will be there all the time. Either way, if you don't have power there when you need it (ie, key on) then it won't work. The input-output switching side of the relay gains its power from a line similar (but not the same as) the one that feeds the ECU. SO I presume that is switched. Again, if there is not power there when you need it, then you have to look upstream. And... the upshot of all that? There is no "ground" at the fuel pump relay. Where you say: and say that pin 1 Black/Pink is ground, that is not true. The ECU trigger is AF73, is black/pink, and is the "ground". When the ECU says it is. The Blue/White wire is the "constant" 12V to power the relay's coil. And when I say "constant", I mean it may well only be on when the key is on. As I said above. So, when the ECU says not to be running the pump (which is any time after about 3s of switching on, with no crank signal or engine speed yet), then you should see 12V at both 1 and 2. Because the 12V will be all the way up to the ECU terminal 18, waiting to be switched to ground. When the ECU switches the fuel pump on, then AF73 should go to ~0V, having been switched to ground and the voltage drop now occurring over the relay coil. 3 & 5 are easy. 5 is the other "constant" 12V, that may or may not be constant but will very much want to be there when the key is on. Same as above. 3 goes to the pump. There should never be 12V visible at 3 unless the relay is pulled in. As to where the immobiliser might have been spliced into all this.... It will either have to be on wire AF70 or AF71, whichever is most accessible near the alarm. Given that all those wires run from the engine bay fusebox or the ECU, via the driver's area to the rear of the car, it could really be either. AF70 will be the same colour from the appropriate fuse all the way to the pump. If it has been cut and is dangling, you should be able to see that  in that area somewhere. Same with AF71.   You really should be able to force the pump to run. Just jump 12V onto AF72 and it should go. That will prove that the pump itself is willing to go along with you when you sort out the upstream. You really should be able to force the fuel pump relay on. Just short AF73 to earth when the key is on. If the pump runs, then the relay is fine, and all the power up to both inputs on the relay is fine. If it doesn't run (and given that you checked the relay itself actually works) then one or both of AF70 and AF71 are not bringing power to the game.
    • @PranK can you elaborate further on the Colorlock Dye? The website has a lot of options. I'm sure you've done all the research. I have old genuine leather seats that I have bought various refurbing creams and such, but never a dye. Any info on how long it lasts? Does it wash out? Is it a hassle? What product do I actually need? Am I just buying this kit and following the steps the page advises or something else? https://www.colourlockaustralia.com.au/colourlock-leather-repair-kit-dye.html
    • These going to fit over the big brakes? I'd be reeeeeeeeaaaall hesitant to believe so.
    • The leather work properly stunned me. Again, I am thankful that the leather was in such good condition. I'm not sure what the indent is at the top of the passenger seat. Like somebody was sitting in it with a golf ball between their shoulders. The wheels are more grey than silver now and missing a lot of gloss.  Here's one with nice silver wheels.
×
×
  • Create New...