My impression on Evo III GT

[95redtransam]

Hello everybody I just thought that a lot of yall were wondering about how this turbo performs.Well ive had mine on my 95 fwd for about 2 weeks now. This turbo is badass. Im boostin 14lbs and it feels like 50 more hp than the t-25 at 16. I dont think there is anything to worry about with the turbo going bad or anything like that. Its a very nice turbo. Im kinda worried about one thing though. I just have a shitty a/f guage. Its reading on the lean side. Is that something that I should be really worried about? I know this guage is not very accurate. Here are my mods

Injen intake
Apexi turboback
1st gen BOV
Dejontool uicp
Evo3 gt
255 pump
boost and a/f guage

I know I need injectors and a tuning device. My next mods are gonna be EGT, 650's, and I think SAFC II, unless you all think something different. Thanks

 

[beat90tsi]

Well ive had mine on my 95 fwd for about 2 weeks now.... I dont think there is anything to worry about with the turbo going bad or anything like that.

I'm sorry, that just seems funny to me.


I didn't seen AFPR on your mod list, I'd do that before I get injectors and SAFC. Tuning is impossible with whack fuel pressures.

 

[Stapl3]

It's not a performance concern, rather a reliablity one.

Your 16g at 14psi might as well be a 14b at 14psi.

 

[blcknspo0ln]

you're on the right track.. turn the e316GGT up to 20 psi and have it running that way for 6 months then come back and say it performs and is reliable .. until then, go with the mods you plan and have at it

besides, your feedback would be nice to finally help end the EVO III GT discussion..

 

[truwarrior]

I didn't notice that much of a difference T25 VS EVOIII at 15psi, besides the T25 died off by redline... Crank the EVOIII to 19-20 and it's a different story

 

[watdaheo504]

i had mine for 3 months now and no problem.. im boosting 16# with no problem . jfyi. i'll give another update in a few more month.

 

[blackGSX2g]

I didn't notice that much of a difference T25 VS EVOIII at 15psi, besides the T25 died off by redline... Crank the EVOIII to 19-20 and it's a different story

Are you sure you don't have any major boost leaks (i.e. stock BOV) or other problems (i.e. your injectors/pump with no control)?

I notice a HUGE difference switching to from my t-25 at 15psi with MAFT/1g BOV to the EVO III at 9psi with the same mods. Turning the EVO to 15psi was a whole new world for my car.

 

[99gst_racer]

I didn't seen AFPR on your mod list, I'd do that before I get injectors and SAFC. Tuning is impossible with whack fuel pressures.

I second that.

What makes you think you're running lean when your fuel pressure is sporadicly and uncontrollably higher than normal?

 

[blackGSX2g]

Im boostin 14lbs........... I just have a shitty a/f guage. Its reading on the lean side. Is that something that I should be really worried about?

First off, you can run 14psi on the EVO with your stock fuel system, the 255 is WAY overkill.

The A/F 'gauge' will only really tell you if your o2s are cycling. If your fuel trims are too far out of whack (too rich or too lean), the gauge will stop cycling showing a low (lean) reading. This is also the case if your o2 sensor is dead or on its way out. Constatly dumping fuel through your car is also a quick way to destry an o2 sensor.

Either swap in a 190 pump and crank the the boost, or get an AFPR and turn down your fuel pressure. Try hooking up a logger to see what your fuel trims are doing.

 

[evolvingGS-t]

if your a/f reads lean or rich, it's always something to worry about.

 

[marq95gst]

DO NOT run more than 15psi with your stock injectors. So you guys run 20psi on stock injectors and side mount? "95redtransam" and you are already running lean at 14psi? Running 20psi on those 450s with give you very bad knock = problems. Wait until you get some 550ccs to run 18-19psi, or for 660ccs you can go 20-22psi. That's on pump gas. Race gas....well then you can go a bit higher. Please do your research before telling someone what to do, it can cost them their engine.

 

[blcknspo0ln]

I have mustang GTs at least 100 ft. behind me when I am halfway up 3rd gear. This is off a red light, and I have a GST!

nope.. still not impressed jk

 

[Turbo Talon DL]

It's not a performance concern, rather a reliablity one.

Your 16g at 14psi might as well be a 14b at 14psi.

I have one small question, ARE YOU CRAZY? I just recently upgraded to the MHI Evo 3, and at 15psi it feels more like 20psi on the 14b! I agree with you on the fact that nether one of those turbos really "feel good" below 15psi, but that comment is wide-left. I normally only run 10-12psi, due to the fact that I am a broke college student and cant afford to upgrade my fuel system, or whatever the wastegate feels like. This turbo has creeped to 20psi on me without the mbc in the circuit, so I know what I am talking about.

 

[Thomas91169]

Im kinda worried about one thing though. I just have a shitty a/f guage. Its reading on the lean side. Is that something that I should be really worried about? I know this guage is not very accurate.

no, its far from accurate, more around the way of being useless and just good for taking up a spot on your a-pillar. unless its a wideband o2 system(like a PLX or such), which i doubt, if its just a gauge spliced into the o2 circut, its worthless for tuning. stop looking at it.

now, your next mod is to get a aeromotive FPR, or get rid of the 255 and get a 190lph. a 255 and aeromitive fpr is pretty overkill for most 16g's, though if you decide to get the FPR and keep the 255, you will have lots of room to expand if you decide to get a bigger turbo. so id say get a aeromotive fpr now, so you will have reliable and accurate fuel pressure. then you can start tuning.

and ditch the EGT idea. if anything, get a wideband o2 setup, so that little useless gauge in your pillar now becomes useful in seeing your true a/f ratio. and im gonna tell you what i tell everyone who wants to get a safcII/logger combo. dont. go straight to dsmlink(if you have a laptop) and dont look back. you wont regret it, and your car will love you for it. lying to the ecu(as in piggyback stuff) is not a very good way to tune a vehicle. plus you can plug the wideband into the dsmlink by running the wideband output through the rear o2 inputs on the ecu, and you can log your wideband o2 straight into dsmlink, along with anything else you could ever dream of logging.

 

[marq95gst]

nope.. still not impressed jk

You're right....I need to go faster...