R56 Running k04 on stock map?
#1
Running k04 on stock map?
My turbo is on its way out and Iv order a jmtc 45 extreme k04 turbo to replace it. Will I be ok to do a straight swap and run it for a few months until I get it mapped? I already have full exhaust system,intercooler and air intake. I don't want to cause any damage to existing parts but unfortunately I can't get the turbo fitted and map done all in one so looking like I may have to go down this route?
#2
My turbo is on its way out and Iv order a jmtc 45 extreme k04 turbo to replace it. Will I be ok to do a straight swap and run it for a few months until I get it mapped? I already have full exhaust system,intercooler and air intake. I don't want to cause any damage to existing parts but unfortunately I can't get the turbo fitted and map done all in one so looking like I may have to go down this route?
#3
But in terms of like the Ecu, will it adjust itself to run the k04 until it gets mapped? Or will it run low on boost or just be normal and take a while longer to spool up?
#4
Thus my original response which is it will be fine if u stay out of boost. It will probably be fine if u do a small amount of in positive boost driving and it will probably not be fine if u go hunting top speed records.
Good luck
#5
Steve is pretty much right on the money. I ran the exact same turbo on an N18 for about a month and a half a few years ago before getting into tuning. Boost still topped out the same, maybe a little lower and AFR's were the same as before.
The ECU will adapt the PWM signal to the pressure controller that regulates the wastegate to control psi in order to get the desired amount of airflow into the engine. In addition pulse width to the injectors is driven by RPM and airflow measured by the MAF sensor in a load based system like ours. In other words 250 g/s of air will still need the same amount of fuel for the same lambda whether it gets there at 10 psi or 15 psi. The load based ECU is also why many of the common modifications like intake, exhaust and intercoolers make very little difference on our vehicles without a tune. There is a short term gain only and then the ECU adapts. I had to dig through some old dyno sheets but the N18 mentioned above had full bolt-ons to include intake, 2.5' exhaust, intercooler, catless DP with the KO4 and made a whopping 171 whp on the stock tune.
What I would not recommend is combining the KO4 with a JB+ and then driving it like ya stole it. Treat your Mini good and she'll do the same to you.
The ECU will adapt the PWM signal to the pressure controller that regulates the wastegate to control psi in order to get the desired amount of airflow into the engine. In addition pulse width to the injectors is driven by RPM and airflow measured by the MAF sensor in a load based system like ours. In other words 250 g/s of air will still need the same amount of fuel for the same lambda whether it gets there at 10 psi or 15 psi. The load based ECU is also why many of the common modifications like intake, exhaust and intercoolers make very little difference on our vehicles without a tune. There is a short term gain only and then the ECU adapts. I had to dig through some old dyno sheets but the N18 mentioned above had full bolt-ons to include intake, 2.5' exhaust, intercooler, catless DP with the KO4 and made a whopping 171 whp on the stock tune.
What I would not recommend is combining the KO4 with a JB+ and then driving it like ya stole it. Treat your Mini good and she'll do the same to you.
#6
Is it using some sort of clever measure of the effort taken to produce a spark in the chamber?
Cheers
RW
#7
Boost based tuning utilizes the MAP sensor to calculate air mass based on engine RPM and manifold pressure. Call it a refined speed density method. Of course with this system the air temp, altitude, etc all affect the amount of air mass entering the engine. Placing a larger turbo on this type of system without retuning will result in higher AFR's.
Trending Topics
#8
Thread
Thread Starter
Forum
Replies
Last Post
Alpha Motoring
MINI Parts for Sale
7
06-01-2016 07:16 PM
PelicanParts.com
Vendor Announcements
0
03-29-2016 02:48 PM