:wave
I\'ve got a few parts waiting to go onto my car, the problem i have is a lot of them depend on each other (cant decat until the turbo kit + frontpipe is on, cant fit the FMIC until the turbo is on, cant fit the PowerFC because the temp sensor is welded into the FMIC! etc etc..) and i want to keep costs down by doing as much as possible in one go.
This might be a big no no but I thought i\'d investigate the different options open to me, could i fit a bigger turbo on a stock ecu but drive it a little as possible and only OFF boost? Just until i got everything else in place for the final mapping. Can I do that without instantly blowing up my engine?
The reason i ask is I dont have the luxury of garage space but i do have access to someone elses driveway where i can work on it for short periods.
What would you guys do? (please dont :flamed me too much!)
Thanks
i think staying off boost would be fine. The map wouldn\'t be perfect but that might not matter in the low revs as long as theres enough fuel going in.
Though I wouldn\'t use my advice, id wait for someone who knows what theyre actually talking about to give you advice!!
The stock ECU will be looking at the AFM for air flow, and it\'s temp sensor built in to work out the mass of air the engine is taking in and will fuel accordingly. It also uses the MAP sensor to modify those fuel maps once it\'s in boost. Adding a bigger turbo will change the characteristics of how the engine runs at different RPM\'s, but provided the AFM and MAP signals are still hitting the ECU correctly, it should be able to fuel the car correctly.
What you want to avoid is fuel cut because you hit 8.6 psi boost oh so easily on a freer flowing exhaust or larger turbo, and putting an FCD in circuit only stops it cutting fuel - not boosting up that high.
I ran my hybrid turbo on a chipped ECU upto 12 psi without issue - I only hit problems when I went passed the maps in the chipped ecu.
Quote from: Prof;638763The stock ECU will be looking at the AFM for air flow, and it\'s temp sensor built in to work out the mass of air the engine is taking in and will fuel accordingly. It also uses the MAP sensor to modify those fuel maps once it\'s in boost. Adding a bigger turbo will change the characteristics of how the engine runs at different RPM\'s, but provided the AFM and MAP signals are still hitting the ECU correctly, it should be able to fuel the car correctly.
What you want to avoid is fuel cut because you hit 8.6 psi boost oh so easily on a freer flowing exhaust or larger turbo, and putting an FCD in circuit only stops it cutting fuel - not boosting up that high.
I ran my hybrid turbo on a chipped ECU upto 12 psi without issue - I only hit problems when I went passed the maps in the chipped ecu.
Be careful with a better exhaust and intake, my turbo had horrendous boost creep without porting, boosted to 0.8bar on the 5psi wastegate spring lol
thanks guys, thats what I thought.
I guess the same goes for secondary injectors, as long as they don\'t stage, I should be able to drive on the stock primaries.
I guess the priority should really be get it running on the standalone ECU. I might have to splash out on a datalogit and just load base maps as I add parts to keep the engine safer.
Alternatively, there\'s paying the tuner to fit the parts as well, but that will up the costs, and I wont learn anything!
I think Pete is selling an e-manage, much easier than a PFC for uploads :) just a thought lol its what Prof is running and what I have sitting on my desk to install lol
Might also be an idea to get a wideband O2 sensor, that way you know if the engine is about to run lean
E-manage is sold and dont go buying a datalogit, they rarely come up unless you want one new. I have my datalogit I dont mind lending you once I am happy with my setup. We have very very similar systems so the maps will not be too far apart. I am also a member of a forum that specialises in PFC and datalogit so any info I can pass on and you can even load my map which will give you a head start. I am also going to start using my Innovate software as well as thats a bit easier to use but you must have a wideband obviously which ideally you need to do any tuning correctly. You just cant guess on the Air/fuel mix. A new datalogit is over $350 so better to buy a wideband for the money.
Do you have a hand controller for your PFC? I dont so hence the reason for the datalogit. Carl will finish off the tune once I have got it somewhere near.
Cheers Pete, replied in the other thread! :Thumbs-up