A few questions prior to tuning with ecmlink

[jacobbyrd]

First, before I say anthing else, in case it helps I've recently installed an evo III 16g turbo, 650cc injectors, wallbro 255 fuel pump.

Ok. Here they go.

1. I have a CEL code 0443 Evaporative purge control valve malfunction it went off earlier, then came back on for my last idle log. Should I be worried right now? Can I tune without fixing it then address it later?

2. AFPR. I'm ordering one tomorrow. Can I go ahead and tune my idle/cruise as best I can without one? Will my engine be ok to cruise around with the stock one until I get mine and install it? What adverse affects may happen if I try to tune with the stock FPR?

3. Wideband o2. Just got a LC-1, It is hooked up, and working fine, but it isn't linked into the ECU as of right now. Will I have difficulty tuning with link without the wideband reading, or can I get a fairly good start by monitoring my wideband gauge and the logging available already through my ecu?

4. I have the boost controller turned all the way down, I got into it once to see how it reacted, and noticed that there is horrible boost creep. (went from 12-20 before I let off at around 6k give or take) I understand that if I am running 20-22 PSI, I wont really have a creep problem at that point. Will 650cc injectors allow me to run 20-22 PSI safely with an evo III 16g? If so, would it be possible/advisable to tune it as best as possible for that boost and bypass addressing the boost creep issue?

5. If the answer to the last part of Q4 is no, and I need to address the creep problem. What is the cheapest way I can do that? External wastegates seem like they could be pricey, but if I must I will get one. I know I've read something about porting a flapper or something on the wastegate. What is the process to do this, and is it something rather simple, or definently something to get a shop to do? How much would it cost if I went that route instead of an external wastegate?

 

[EvilTSi_97]

First, before I say anthing else, in case it helps I've recently installed an evo III 16g turbo, 650cc injectors, wallbro 255 fuel pump.

Ok. Here they go.

1. I have a CEL code 0443 Evaporative purge control valve malfunction it went off earlier, then came back on for my last idle log. Should I be worried right now? Can I tune without fixing it then address it later?

2. AFPR. I'm ordering one tomorrow. Can I go ahead and tune my idle/cruise as best I can without one? Will my engine be ok to cruise around with the stock one until I get mine and install it? What adverse affects may happen if I try to tune with the stock FPR?

3. Wideband o2. Just got a LC-1, It is hooked up, and working fine, but it isn't linked into the ECU as of right now. Will I have difficulty tuning with link without the wideband reading, or can I get a fairly good start by monitoring my wideband gauge and the logging available already through my ecu?

4. I have the boost controller turned all the way down, I got into it once to see how it reacted, and noticed that there is horrible boost creep. (went from 12-20 before I let off at around 6k give or take) I understand that if I am running 20-22 PSI, I wont really have a creep problem at that point. Will 650cc injectors allow me to run 20-22 PSI safely with an evo III 16g? If so, would it be possible/advisable to tune it as best as possible for that boost and bypass addressing the boost creep issue?

5. If the answer to the last part of Q4 is no, and I need to address the creep problem. What is the cheapest way I can do that? External wastegates seem like they could be pricey, but if I must I will get one. I know I've read something about porting a flapper or something on the wastegate. What is the process to do this, and is it something rather simple, or definently something to get a shop to do? How much would it cost if I went that route instead of an external wastegate?

1.Yes, you can address this later and still tune the car.

2. Yes, but make sure your base pressure is the set to the same as stock or make the proper adjustments in ECMLink to compensate for fuel if you up the pressure.

3. Having the WB logged is really great for solving issues. If you just want to get a "basic street tune" I think you'd be fine, just keep an EAGLE EYE on the gauge. It'd be best if you just went ahead and wired it up.

4. You need to fix the boost creep issue. There may be times where the boost will need to come down, etc. Plus, it's just basic sense to fix an issue and not bandaid it. Yes, an external wastegate would be wonderful if you have high power levels, but if you want to port:

"Boost creep can usually be eliminated by porting the wastegate opening and O2 sensor housing or by using an external wastegate. Both of these allow exhaust gasses to vent more efficiently." -Extreme Motorsports

 

[Calan]

Will 650cc injectors allow me to run 20-22 PSI safely with an evo III 16g?

Depends on the type of fuel and how efficient your e316g is, but 22psi will most likely be pushing it if you want to keep a nice safety margin on the IDC's.

Since you have ECMLink, I highly suggest you go ahead and get some larger injectors...something like a set of FIC Bluemax 1150's or 1250's would be ideal. Along with the pump and AFPR, that should give you plenty of fuel for quite a while, even if you want to run E85. At this point, the 650's are going to be your weak link when it comes to making power.