I'd recommend you don't adjust boost until you have a proper logging and tuning setup so you know for sure what you're doing works.

Wastegate pressure is all that'll be safe until you have a way to log and monitor your AFRs.

Get a 190 fuel pump they better if you want to keep yor stock fuel pressure regulator 14b makes good power in 15lbs you can go 20 and still be good and the stock 2g injectors are good till 15lbs still they lean out

I would recomend at the very least have a logger or wideband, but people told me not to put my 16g on my car with stock fuel system and nothing more than a boost gauge and mbc, and i did it anyway, and ran 15psi with no KNOWN problems, and that was on the stock 1g smic, keep it at no more than 16psi, just remember you might have more fun now but you may hinder the reliabilty of your dsm without evan knowing it.

Theres some mis information in this thread.

First thing is first. You need to get link. That is the most important upgrade Ive done to my car. I pushed the stock fuel system to 20 psi. But thats only with me monitoring it with link. I was at 96% ICD, but it can be done.

I still have the stock 450's installed. Running at 18 safely. You guys really under estamate the stock fuel system on our cars

TJCTalon said:

Theres some mis information in this thread.

First thing is first. You need to get link. That is the most important upgrade Ive done to my car. I pushed the stock fuel system to 20 psi. But thats only with me monitoring it with link. I was at 96% ICD, but it can be done.

I still have the stock 450's installed. Running at 18 safely. You guys really under estamate the stock fuel system on our cars

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96%? At what RPM?

Just because you're under 100% doesn't mean you have room to go. You were way over the operating range of the stock DSM injector. What was your IPW? IDC is just a calculation of your IPW and RPM.

Now you have to at the very least, increase fuel pressure to get more injector. But on a stock fuel system, you can't do that with the stock FPR. So you proved that the injector and the stock regulator isn't sufficient for your mods at that time.

You're OVERestimating the limits of the stock fuel system. Just because your car hasn't blow up, doesn't mean its running "safe".

Sure, you pushed the injector to 20psi and it can be done.....done wrong.

How was it done wrong? Having control and monitoring your car is correct. Its a controlled environment.

Now turning up the boost until you fuel cutt is the wrong way.

im on a 14b with a front mount, mbc, boost guage, and stock fuel system i have the car at 12 lbs and i personally have a blast with it where it is now until I have wideband and/or DSM link to monitor whats going on when i turn up the boost

TJCTalon said:

How was it done wrong? Having control and monitoring your car is correct. Its a controlled environment.

Now turning up the boost until you fuel cutt is the wrong way.

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Sure. You are absolutely correct. Having some type of datalogger (dsmlink) is correct. However, you're IDC's indicate that the stock injector needs to be upgraded.

To say it runs "safely" is an understatement. I mean, you're on the right path if your mods in your profile are up to date. I'm just saying...you are due for an injector upgrade if you hit anywhere near 96% IDC at any rpm.

Go make a pull at 20psi and post a log for me. Then make a pull at 15psi and post that log as well. I'll help you find the limits of the stock injectors.

Yes my mods are up to date. But the only reason I added the AFPR and 255 FP is because a bigger turbo is going on this winter. The stock fuel system was enough to make me and the 14b happy.

Im agreeing with you. 96% is very unsafe, I dont recomend it. Thats why im at 18psi and only at 82% cycle duty.

When I was at 20psi I was knocking really bad. If you want to finish this convo in PM's im down. No need to clutter someone elses thread. I have a few logs. Im a noob at tuning.

TJCTalon said:

Yes my mods are up to date. But the only reason I added the AFPR and 255 FP is because a bigger turbo is going on this winter. The stock fuel system was enough to make me and the 14b happy.

Im agreeing with you. 96% is very unsafe, I dont recomend it. Thats why im at 18psi and only at 82% cycle duty.

When I was at 20psi I was knocking really bad. If you want to finish this convo in PM's im down. No need to clutter someone elses thread. I have a few logs. Im a noob at tuning.

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i dont mind to be honest. im learning a little bit from this. plus brokentsi is a buddy of mine in rl

You would need something to tune/log the car with properly. You can swap a 14b instead of a T25 and it will pull harder and hold boost a little better. IMO get your self a set of 550cc injectors, a 255 pump and something to tune with and you can turn up the boost safely.

Im currently running 24~25psi on a evo3 16g with RC 550 + 255 fp and im tuning with link and i cant complain.

Good luck

...there are PLENTY of guys running a 14b and nothing else on 13-15 psi, thats about what the stock fuel system can handle. No need to do these more expensive upgrades, although nice to have, at the moment you just install a 14b and turn up the boost a little bit.

What you should be worried about before turning up the boost is having a boost gauge to keep an eye on what psi you are running. If it were me, and this was my 1st mod on my 1st DSM, run at about 13-14 psi and have fun with it!

A logger/wideband should be one of the first things you buy when you start upping the boost. They will save you a lot of money in the long run by keeping you in the safe zone without blowing your car up. Every car responds differently to added boost so thats why a logger is so important. Even at stock boost levels going from a t25 to a 14b should give you a noticeable difference but its once you get over like 15psi thats where the 14b will chew up and spit out the t25. I've owned 3 completely stock 1g's and have personally run them all at 15psi without knock and idc's barely over 80%.

TSiTuner23 said:

...there are PLENTY of guys running a 14b and nothing else on 13-15 psi, thats about what the stock fuel system can handle. No need to do these more expensive upgrades, although nice to have, at the moment you just install a 14b and turn up the boost a little bit.

What you should be worried about before turning up the boost is having a boost gauge to keep an eye on what psi you are running. If it were me, and this was my 1st mod on my 1st DSM, run at about 13-14 psi and have fun with it!

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i have a boost gauge, fmic, and a mbc. right now i am sitting at around 15 psi. i was looking into getting a 14b to have a little more fun. i did have the understanding that in time i would need to upgrade the fuel system. i plan to do so but at the moment i still do not know the car well enough to throw heavier mods into it. im sure by the end of the summer i will know more about the car as in anything else that may need to be fixed or replaced

when i installed my 16g on the stock injectors i would run close to 18 psi at times and the computers told me the stock injectors were holding it fine the fuel system should be alright for awhile. it will hold you over till you get upgraded injectors. run about 16 psi and it should be fine

corbintomm327 said:

when i installed my 16g on the stock injectors i would run close to 18 psi at times and the computers told me the stock injectors were holding it fine the fuel system should be alright for awhile. it will hold you over till you get upgraded injectors. run about 16 psi and it should be fine

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And how did the computer tell you that?

I'd do a few 3 gear wot pulls at 12psi and do a plug chop if your really concerned till you get link.

corbintomm327 said:

when i installed my 16g on the stock injectors i would run close to 18 psi at times and the computers told me the stock injectors were holding it fine the fuel system should be alright for awhile. it will hold you over till you get upgraded injectors. run about 16 psi and it should be fine

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When you say "holding it fine" do you just mean that it didn't blow up on you? I've logged idc's on my old 16g setup and idc's were in the mid to upper 90's on the stock injectors at 15-16psi. I would never recommend running 18psi on a 16g with stock injectors thats just asking for trouble on pump gas.

Agreed with DJ23, you can probably run 18psi on a 16g with stock injectors..following 104 Octane. Check out this injector chart from RRE for proper setups on fuel injectors.

Road Race Engineering's Eclipse Fuel Delivery Upgrades

Seriously, what is up with the newb questions been asked over and over again. That table has been around since like 2002. I myself have quoted it many, many times.

You can install your 14B, get a Boost gauge and set it around 13, no more then 15psi to be save while you get Link to monitor.

There is no set boost level thats "safe". Every car responds differently to boost thats why a logger is needed to monitor things like knock, timing, idc's etc. A wideband is great for fine tuning but even if its telling you that your not running lean you still might be pushing those injectors well past there safe zone so thats where the logger is a good piece to have. Hell you can dload mmcd datalogging software for free and spend maybe $50 tops on a decent pda and datalogger cable and it will tell you alot about how your cars running.

the 14b is installed. after installing i forgot to readjust the MBC. Did a pull and hit about 18lbs before i fuel cut. turned it to about 14 lbs and the car is running good from what i can tell. it was a good idea to replace the t25. for the longest time i had a rattle i could not figure out for the life of me. since installing the 14b i have yet to hear the rattle. but right now the car sits. i ended up blowing the oil feed line in half. my guess is there was a weak spot at that point in the line. i found a steel braided on extremepsi.com. Now its back to the waiting game.