Checking the general health of the car

[fuscobal]

Hello guys. Car has a stage 3 Revo software and has the following mods :

2006 Black Magic GTI | Milltek Non-Res Turbo-Back | BSH 27mm RSB + H&R 26mm FSB | BSH pendeleum mount | Evoms V-Flow| Stri Racing gauges | PCV fix | Sachs racing clutch | Forge Short shift + 42DD/FFE bushings | Bilstein PSS10 | Peloquin LSD | K04 turbo | S3 injectors | IE rods/Calico bearings | S3 front brakes + Tarox F2000 discs + DS2500 pads | S3 FMIC | S3 camshafts | Autotech fuel pump | 235/35/ZR19 GY F1 asymmetric on BBS RS-GT | REVO Stage 3

Here's my latest logs and dyno (Revo setting used was 9-8-9):

http://img197.imageshack.us/gal.php?g=fuscobalmotorcp.jpg

Car seems to run great. What I'm a little worried about :

- Exhaust temps of over 999 degrees
- The little dip in the boost response at around 5000rpms
- Actual fuel pressure is 3-5 bar under the requested of 130 bar (I've ordered the RS4 pressure valve wich is rated at 136 bar and I've heard cured this problem)
- The low pressure seems to be pretty low compared to the requested (this might be also related to the high pressure system
- Timing retard seems to be a little to much (maybe I should set timing from 8 to 7 ?)

Any comments would be highly appreciated !

[danishmkvgti]

i notice you have a dip in boost same as me in 5600 to 5800/6000 rpm, any reason as to why??

[fuscobal]

Not really but I'd like to find out. DV is in perfect shape, I've checked it. The dip wasn't there one year ago when I switched to stage 3 and made logs. In the meantime, due to a defective rod bearing that worn above limits, I opened up the engine and replaced the bearings with Calico race bearings and also added IE forged rods. I've also cleaned the valves wich were so full of deposits, I could barely see the through the holes. After cleaning the valves, the engine was much more responsive in low Rpms !

[cuprak1]

Did you fit the rs4 valve and did it help?

[fuscobal]

I did fit it and the logs show the valve is holing more pressure but the graph is more irregular now (oscillating like a wave). I'll post a comparative graph before and after !

[cuprak1]

Hmm did you have any flat spots in the rev range before / after?

does it drive ok?

[fuscobal]

Yes it drives ok but it gave me limp mode 2 times at about 2500 rpms and only while driving normally (very slight acceleration). On 2000-2500RPMs I feel like the boost builds almost too soon for this turbocharger (like a k03) and I suspect the software sees this as being wrong. Under WOT everything is fine !

[cuprak1]

hmm and was this only after the valve was fitted? what software was you running at the time? and was this on the uprated turbo?

[fuscobal]

Yes man, I had all the mods you see in my sig. I've only replaced that valve !

[cuprak1]

Was the part number - 079130757

[fuscobal]

Yes, that's the correct part number for RS4 pressure regulating valve !

[Hurdy]

Are you still running timing on 8 and fuelling on 9?

Timing should only go above 7 if you are using race fuel, octane booster or water/meth.

I run fuelling on 6.

[fuscobal]

Yes, it was 9-8-9 the setting but everything seems fine. It also depends on the gas from each country. I've now lowered to 9-7-9 and this is probably what I'll be using on the ring ! What setting are you using on the ring Hurdy ?

[Hurdy]

I'll be taking my PC and SPS+ controller with me and trying a few settings. The fuel there is 100 ron and so will most likely use timing 7. Boost will stay at 7 for now as the actuator seems to give overboost above that, which adversely affects top end power. Fuelling will be 7 too most likely, so that would be 777 as a baseline

[gillm]

egt's of over 999 . i mwould stop driving it hard and get it booked in and looked at anything over 850 is bad news