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What are your IATs like with the added boost, etc. ?
Generally FMIC upgrades are because of high IATs not so much air flow, unless it becomes a restriction and you're getting pressure drops from In/Out of the core.
Also, I wonder if that slight bump in the torque curve is caused by the 4 Motion sending power around. Similar thing happens on Skyline GT-Rs when the Attessa goes mental lol.
Cant recall the IAT's, I know the actual temps were input into the dyno dynamics software for the power calculation. If you want to cheat you can put in 100 degree or higher intake temps when actuals are 70-8- degrees which will give you a higher peak reading.
Bigger turbo would generally mean bigger cooler, did the same on my Skyline many many many many years ago.
Generally I use the weather station for the ambient temperatures and use the IAT for the compensation tables (fuel and ignition), IAT should not be used to determine overall power figures haha..
That's cheating :)
I know certain shops would disconnect their ambient temp probes to read higher power, anyhow that's off topic :)
Bigger turbo doesn't mean bigger cooler, smaller turbo with big boost would generate much more heat than a bigger turbo with lower boost (where both turbos are supplying the same amount of airflow).
Sorry for all the questions, I've never tuned european cars so it's fascinating. I predominantly help build and dyno/road tune Jap siet boxes for friends and forum members as a hobby.
There are many shops that fudge dyno numbers, I have seen some put ambient temp sensor on the engine..
I am waiting on the guy that did the IS38 swap to get some dyno numbers.
This is why I tune my own cars :)
I’ve got a little vibration also at low rpm on startup, when I switch to D it does seem to go away. My CEL for 02 sensor has been coded out by the tune. Plenty of exhaust, dsg farts, pops and bangs, induction and craziness in S and Manual mode with ESC on sport and DCC on sport.Quote:
Originally Posted by INASNT
That price for the IS38 installed and tune sounds competitive! How many hours did they quote on the labour? My DP, turbo swap and change to colder NGK racing spark plugs was around 5 hours. I’d love someone to go Big Turbo on a Tig, it would be insane........
You got CTS downpipe?Quote:
Originally Posted by Melbourne_Tiggy
Price for IS38 was combined, didnt get hours for each part....
I’ve got the APR MQB AWD downpipe which also removes the resonator and bolts onto the factory muffler. I did that at the same time as the IS38, because they had to remove the stock DP to unbolt the IS20.Quote:
Originally Posted by INASNT
Hay man, car is looking super
I have a similar setup + a few mods, I'm making great power but haven't messed around with the exhaust too much only the DP at the moment but not loving the sound, i see you have made some exhaust changes and was wondering what the best setup is, here is some info about my car out of interest sake
MOds:
- JB 4Map 6
- IS38 turbo
- DP
- Rgm Carbon intake
- VWR 90 elbow
- Forge DV
- Forge Hose
- H&R Lowering kit
Dyno: 286kw (crank) 543nm(crank)
Noice...Quote:
Originally Posted by SleepR
Got a pic of your car on the H&R lowering kit?
If you go a custom tune with your current setup you will have more power and better power delivery, JB4 can only do so much.
The difference from stock with the downpipe on mine is huge, sounds really good without being too boy racer loud