14b boost

[gsxeclipse97]

Ok i know that if you have a 14b on a 2g with the 2g head with stock fuel system you are only supose to run 15psi max. Now on the flip side of that i have done a six bolt swap and have the same 14b can i still run 15psi without hurting anything because i know that the port size is much larger than that of the 2g which means it should flow more air correct. so is it safe to keep the same boost level?

 

[DSM-Talon-John]

Well i know that my friends 1st gen fuel cuts if he runs 15psi, but that probably wont help you out any.

 

[gsxeclipse97]

no fuel cut it kind of hesitated a little bit but ran fine after that until i had my proble listed down below some where.

 

[DSM-Talon-John]

If you want to turn it up as high as possible without hurting anything just get a logger. I wouldnt recomend going over 13 unless you get a logger.

 

[gsxeclipse97]

oh this guy is selling one for 60 bucks im going to go see if i can pick it up from him tomorrow. but i ran 15psi before with no problems so i didnt that it would be a problem. I'm still running 2g pistons

 

[jking29]

The only way to be sure is to log it and find out if it is getting knock. As far as the engine handling it, as long as the engine is in good shape and you are getting no knock, 15 lbs is pretty safe. With fuel mods and a front mount or water injection, you could probably run 20 pretty safely. I maxed out my 14b last year at 23lbs on pump gas with no problems.

 

[gsxeclipse97]

The engine should be in good shape it was just rebuilt but its acting funny right now. So im trying not to boost but i don't really know what its doing.

 

[DSM-Talon-John]

well, go get the turbo a logging device and a fuel pump, thats about 260. You can run close to 18 psi i bet.

 

[JayRolla]

18psi on stock injectors?? You need a logger, you most likely wont run more than 13-15psi. I would run 12psi or lower without a logger to be safe. Why risk premature wear from detonation.

 

[DSM-Talon-John]

Ive heard of people running 19-21 psi on stock injectors. You could run 17-18 with a fuel pump.

 

[gsxeclipse97]

but it would run rich i would have to have something to tune the fuel with. I talked to this guy and he was running 20 on a 16g with the stock fuel pump and injectors he said that he had no problems but i haven't seen him in a while. Problay because he killed his car

 

[DSM-Talon-John]

that seems a bit overboard for stock. Just a walbro 190 fuel pump wont overrun anything. Im running one on my t-25 at 15psi.

 

[JayRolla]

19-21 psi on stock injectors. that is pretty funny. I would not even try to push stock injectors any more. Im guessing these people running that much boost on injectors dont know what there doing or even tuned or logged the motor.

 

[DSM-Talon-John]

Well i read it on this forum

 

[jking29]

19-21 psi on stock injectors. that is pretty funny. I would not even try to push stock injectors any more. Im guessing these people running that much boost on injectors dont know what there doing or even tuned or logged the motor.

You might be able to do that with race gas or water injection, but no way you could do it on pump. I ran into knock at 18lbs on mine before I went to the front mount, injectors and 2g mas. I was also at 96% idc's at that point with a rewired 190.

 

[gsxeclipse97]

that seems a bit overboard for stock. Just a walbro 190 fuel pump wont overrun anything. Im running one on my t-25 at 15psi.

Isn't that a bit of over kill for a t25

 

[JayRolla]

What would be overkill?? 15psi is about all you want to run on the t25 and the pump is when he upgrades his turbo.

 

[gsxeclipse97]

I know i was thinking of something else sorry.

 

[lenny 15]

well, i was never able to run 15 psi on my stock fuel system without hitting fuel cut, but then 1Gs have the stock fuel pressure set at 37 psi, and correct me if im wrong, but arent 2Gs set at 42-43 psi? that is why people can run 15 psi in the 2gs. but thats just for the general 2G, i would still use the logger. and the T25 only spikes at 15psi, ive never heard off it holding more then 10psi to redline.

 

[DSM-Talon-John]

Mine doesnt hold, t-25's are worthless, I hate mine.

 

[JayRolla]

well, i was never able to run 15 psi on my stock fuel system without hitting fuel cut, but then 1Gs have the stock fuel pressure set at 37 psi, and correct me if im wrong, but arent 2Gs set at 42-43 psi? that is why people can run 15 psi in the 2gs. but thats just for the general 2G, i would still use the logger. and the T25 only spikes at 15psi, ive never heard off it holding more then 10psi to redline.

Its not if you can run as much boost before you hit fuel cut. Its about how much boost you can run without knocking. Also the timing is not as aggressive so people can usually run about 15psi on a stock fuel map. Also the 1g maf sucks and thats why you hit fuel cut when the 2g is way better and fuel cuts way later.

 

[lenny 15]

Its not if you can run as much boost before you hit fuel cut. Its about how much boost you can run without knocking. Also the timing is not as aggressive so people can usually run about 15psi on a stock fuel map. Also the 1g maf sucks and thats why you hit fuel cut when the 2g is way better and fuel cuts way later.

thanks

that was when i first got the car and didnt know any better so i turned it up to 15 psi cause people said you can do 15 psi on the stock fuel system. as it turned out, they all had 2Gs, and they were talking about injectors and stock fp, and were not talking about the entire system. like... the fuel pump .

 

[gsxeclipse97]

well while all of this is very helpful it still doesn't anwser my question. Is there going to be more of a problem with me running 15psi on the 1g head vs 2g head. due to the port size.

 

[DSMnOOb00]

okay, it looks like the 2g head is better because of the port size.. well i have a 14b with a 1g manifold thats been portted, and got a 190, can i rise my psi to 15 or more? everything else is stock... i dont want to hurt anything...

 

[andymoraitis]

The only way to tell is to hook up a logger and find out for sure.