My car came with some tasty mods, but there is no paper work on engine internals, over the weekend I took groover out in the zed, now I've been running it with the boost controller off (9psi) but thought I'd try it with the boost controller set at the low setting on my boost controller, it went over 14 psi, I don't really want to kill my engine so I haven't even bothered trying it on the high setting as I just don't know what engine parts are in it.

 

Anyway these are the mods my car defiantly has

 

Gt525 turbos

Jwt chip for 555 injectors

555 injectors

Hks air filter

Decat exhaust

Z1 side mount intercoolers

Z1 dump valves

Z1 oil cooler

 

Engine internals unknown if they are stock or not so I'm presuming they are stock

yeah man are you up for a double dyno day??

somebody will tell you better but there is accel and decel maps one could be rich and the other lean

I appreciate all comments from jaffa and noz and slickpete, they are always good to hear from when it comes to tunes and builds.

 

Ill PM john dixon i think, see about getting it up to him to see what its mapped as, in the mean time ill look for a AFR gauge.

well im not sure here, im sure you will correct me, but if its lean under load, i wouldn't get pops out of the exhaust when changing gear and engine breaking? would of thought that would only happen if running too rich due to excess fuel entering the exhaust while still being burnt.

 

also the reasons for the thread is to get a clear understanding of what is best for it, ive had some good feed back so far, im trying not to destroy my engine, if i say something a bit noobish, thats because i want to know :lol:

 

When engine breaking you're running lean. As lean as it is possible as the injectors are shut off above a certain RPM (approx 1500 when fully warm). It's basically fresh air on overrun.

 

Rich isn't "good", either. Bore wash is very bad and an overly rich mixture can also promote det. Lean under boost is obviously the worst case scenario though. Spot-on AFR & safe timing (unless you choose to push things knowing the potential risks) is the only way to go for peace of mind.

somebody will tell you better but there is accel and decel maps one could be rich and the other lean

 

There isn't. It's all one map. There are knock maps when the knock sensor detects knock, there is a high gear map and corresponding high gear knock map for top gear on the manuals.

 

Accelerating & deccelerating are covered by the primary fuel map.

475hp is a monstrous number gotta be careful good job youve got some people with the know how on the forum

When engine breaking you're running lean. As lean as it is possible as the injectors are shut off above a certain RPM (approx 1500 when fully warm). It's basically fresh air on overrun.

 

Rich isn't "good", either. Bore wash is very bad and an overly rich mixture can also promote det. Lean under boost is obviously the worst case scenario though. Spot-on AFR & safe timing (unless you choose to push things knowing the potential risks) is the only way to go for peace of mind.

 

this is why i think its best i leave this sort of thing to people who know how to set things up lol, totally noobish comments from me. though all part of the learning process

 

does any know if the drift series of gauges have an AFR setting one? nvm ill go have a look.

475hp is a monstrous number gotta be careful good job youve got some people with the know how on the forum

 

last two digits the other way around, 457.5, as i said the low setting on the boost controller shot over 14psi so i lifted off, really dont want to try the high setting until i know everything is working how it should.

 

But again, bear in mind that was from back in 2009 and not resent, all sorts could of happened between then and now.

ahh cool vodkashots

noz take it that doesent count on aftermarket ecu?? (accel and decel maps)

ahh cool vodkashots

noz take it that doesent count on aftermarket ecu?? (accel and decel maps)

 

Nope, not on any ECU I'm aware of. The deceleration (overrun) fuel cut & fuel recover variables are 2d maps that specify an RPM dependent on engine temp. These can be modified, and even a stock ECU can be programmed so overrun fuel cut is disabled. If you're a fan of that sort of thing ;)

Nope, not on any ECU I'm aware of. The deceleration (overrun) fuel cut & fuel recover variables are 2d maps that specify an RPM dependent on engine temp. These can be modified, and even a stock ECU can be programmed so overrun fuel cut is disabled. If you're a fan of that sort of thing ;)

 

Are you coming Santa pod for japshow final at the end of the month?

Are you coming Santa pod for japshow final at the end of the month?

 

Most definitely! More than likely in the Pulsar though.

 

I'll be at Pod for RWYB this weekend as well, and every weekend until the last one of the year hopefully.

I havnt had any problems with the boost i run, so just set 0psi and up your compression and take that heavy spinning blade of death off each header....

I run mine about half way down the decat pipe.

About level with gear lever.

Its horizontal and at 90 deg to the flow as you suggest.

 

thats where i run all mine when building an exhaust spot on placement :)

I havnt had any problems with the boost i run, so just set 0psi and up your compression and take that heavy spinning blade of death off each header....

 

Eh? Not sure I can quite decode your message, something about removing turbos or something.....

Eh? Not sure I can quite decode your message, something about removing turbos or something.....

 

FFS wake up ian!!:hammer:

Zedzilla belongs in my division!:winkiss:

NA all the way. LOL:whistling:

Nope, not on any ECU I'm aware of. The deceleration (overrun) fuel cut & fuel recover variables are 2d maps that specify an RPM dependent on engine temp. These can be modified, and even a stock ECU can be programmed so overrun fuel cut is disabled. If you're a fan of that sort of thing ;)

 

thanks for clearing that up for me!

facepalm xD

... sound a bit like me .. haha

lol ive thought about that, but before i get to that stage, think ill get back up car lol

ian just be more like me. im running 16-18psi boost i really dont care if i blow it up as ill just build another engine. then blow that up. then build another then blow that up. its just the way things go. lmao

 

Ian is very much a family man with a sense of responsibility and people around him who depend on him.

So he wont be like you.:hammer:

Plus......................................

there is only room for one i***t on any one forum and we already have you:whistling:

 

:lol::lol::lol:

Edited September 11, 201213 yr by vodkashots
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ian just be more like me. im running 16-18psi boost. i really dont care if i blow it up as ill just build another engine. then blow that up. then build another then blow that up. its just the way things go. lmao

 

What a bizarre philosophy? You must be loaded?.. And have lots of time in your hands :D

actually...... lmao. not loaded but yes i have time on my hands and spare cash. im 27 i have no woman in my life, no kids and not much of a social life. im on 20k a year plus i, trying to start my own business. so loaded im not but i have nothing else to spend money on so why not. lol

 

Damn right!!

 

16-18psi is baby boost, anyhoo :D

For longevity's sake, further downstream is preferred. I've run widebands in various positions, my MR2 has it about 12" from the turbine housing, my old S13 had it half way to the back box. I've also ran them in purpose-built clamps for the tailpipe. As for orientation, keep it above the horizontal to protect the sensor from condensation, and perpendicular to the flow of exhaust gas.

 

I run mine about half way down the decat pipe.

About level with gear lever.

Its horizontal and at 90 deg to the flow as you suggest.

 

Cheers guys

 

Just out of interest is there any better degree of accuracy running them closer to the turbo?

 

Would you say AFR monitoring has replaced EGT monitoring or is there still a use for it? I've never fully understood the point of EGT.

Leaner the engine hotter the engine/exhaust EGT is a good tool ... but i would say AFR is way more needed ... and they recommend the sensor to be arounf 10">12" away from the main header ... in all turbo aps this is no problem my Down pipes have the sensors just before the main exhaust flange