need info on max boost for srt4 neon
 

a friend of mine hasd a srt neon and wants to raise the boost from the stock 13psi to something more but safe without blowing the motor, i was thinking 15-17 would be safe but i have no knowledge of the motors and how they compensate for more boost but really want to know what the max psi on the stock everythign till theres probblems.

would really like to crank his to 17 with the eebc one from here.

http://ee-enhanced.com/data/storage/...8966357251.JPG

Re: need info on max boost for srt4 neon
 

turn it up and see what happens. that stock turbo is a little fucker, anyways. more of an air heater than anything else at higher pressure levels.

Re: need info on max boost for srt4 neon
 

kinda what i was thinking. if its already at 13 from the factory im sure another 4psi wouldnt hurt anything too bad.

Re: need info on max boost for srt4 neon
 

without fuel mods i dont think you could go much higher than 17psi. im sure it will be safe there though

Re: need info on max boost for srt4 neon
 

Are you also going to raise the rev limit; look for a old post of mine about a srt4 and his flywheel >:D.

Re: need info on max boost for srt4 neon
 

STR4 are the most robust factory turbo 4cyl of our era. Fit a 22R fuel rail (minor mods, much larger, practically bolts on), cut off the cats and run straight pipe, switch wastegate actuators and you too can make 309 whp on a Mustang dyno off of a stock stage nothing SRT4. Push ~19 and go wax asses.

Re: need info on max boost for srt4 neon
 

18psi is pushing it on stock fuel, 17psi is safe and will make the most power. Stock turbos are only good up to 20psi before they start blowing hot air. One of the best things to do would be to get a used fuel return line for like 200 bux, an AFC with a tune and like JD said 300whp all day no problem on the stock pcm

Re: need info on max boost for srt4 neon
 

thanks ill let him know

Re: need info on max boost for srt4 neon
 

Yah, AFCs work on those cars for some reason. Been through one and two e-manages, plugs come out looking perfect. I suspect the ECU has a very intelligent KS-reading protocol.

Stock stage nothing ECU is the best for piggybacking of of, even with bigger injectors and turbo, etc. The Stage ECUs will fight you, and in fact the Stage packages are jokes since you can get the same peak power out of a stock car for less.

Re: need info on max boost for srt4 neon
 

from the sounds of it, it sounds like a decent motor. too bad its in a neon though :1.

Re: need info on max boost for srt4 neon
 

Sort of like great engines in shitbox Civics... anybody who'd build something like that must be slighty retarded, correct?

Re: need info on max boost for srt4 neon
 

True, but the staged pcms are a bit more aggresive on the timing side, and the high octaine mode is dope too

Re: need info on max boost for srt4 neon
 

Yeah, try to pull the AFC trick on one of the stage ECUs, they're great. That's why, running the same stock turbo, the stage-less cars run just as strong or stronger.

High octane mode is pointless, for a given airmass you don't make more power by swapping to differently rated iso-octane based fuel.

I may not have made my name with Dodges, but I'm not new to this and people bring these things to me for tuning.

Re: need info on max boost for srt4 neon
 

lol...that was good.

Re: need info on max boost for srt4 neon
 

My buddy is running ~26psi with a full return line, 3" DP, SAFC, and a map clamp and still can maintain a 11.0 AFR. I remember him running about 19psi with no fuel mods. Those stock turbos run out of air though and seem to drop boost.

Re: need info on max boost for srt4 neon
 

The weak point in the srt4 isnt the engine (which may as well be chiseled from a solid chunk of granite) its the merc. transmission that was designed for a diesel, and is forced to shift at engine speeds twice as high as it was originally intended. :6

SRT4's are the new dsm lol.

Re: need info on max boost for srt4 neon
 

my brotheinlaws took a beating like no other untill a front tire blew out and it ended up in a tree :'( It only had 100 miles on a new/bigger turbo we just put in.

At 18psi it did a pretty good job. On street tires, stock turbo, no cat, 3" exh. and a upgraded wg, it ran 13.2 @ 110 mph. 2.3 60ft... lol

Re: need info on max boost for srt4 neon
 

One of the guys in our car club has an 400hp srt-4 running at 18psi off a monster 50trim with a .87 exhaust housing. He had to upgrade injectors/pump/fuel rail but he's still hitting a lean spot due to the shitty returnless style fuel system...it tends to cavitate the rail after a few seconds. A return style fuel system with a fpr and upgraded line sizes would be a worthwhile investment into any srt-4 IMO.

Re: need info on max boost for srt4 neon
 

:P

Re: need info on max boost for srt4 neon
 

Hammy Sammy FTW!

Re: need info on max boost for srt4 neon
 

wtf is Hammy Sammy? (who?)

Re: need info on max boost for srt4 neon
 

STFU. You're like that annoying little kid who always asks "why?"

Re: need info on max boost for srt4 neon
 

Why?

Re: need info on max boost for srt4 neon
 

Exactly.

Re: need info on max boost for srt4 neon
 

ok

Re: need info on max boost for srt4 neon
 

ok

Re: need info on max boost for srt4 neon
 

i do know that the stock internals have taken 501whp.

If any improvements have been made since then, i want to know about it.

I wanted to run srt4 internals in a 2.4L caravan/stratus block with my dohc head in my eclipse.....

Still hunting for a wrecked srt4. >:D

Re: need info on max boost for srt4 neon
 

Almost had it going man.




Ok

Re: need info on max boost for srt4 neon
 

Nowhere in his post did he mention making it a return system other than the mention of a "22r" rail. Now I'm not too familiar with that particular piece, but if it's "fairly bolt-on" I would assume it's not a return style.
He has a Boomba upgraded rail and still cavitates like hell, that's why I mentioned converting over to a return system.

Re: need info on max boost for srt4 neon
 

22re rail from a toyota pickup/hilux/4runner etc. is return style. Bolts in with minor modification. Use the line for the purge vent for your return line and an aftermarket reg. and your done. Its really not that hard, it should be one of the first mods on an srt, stock stuff is just asking for failure.

Re: need info on max boost for srt4 neon
 

Some guy in utah has hit 600 with an AEM EMS on stock block