93 Octane Tune lean? SRT-4

[kmskovenant]

I have AEM Wideband installed. I was using 93 octane tune with 9r17.crom. Around 4000-4500rpm i'm getting 11.7-11.8 ratio which seems good but once it passes 5000rpm till redline, my afr goes up to 12.2-12.8 Can i blow my motor if i keep on running with this canned 93 oct tune? or it is normal for that tune since stock WGA drops boost at redline?

I tried updated 9r19.crom, same AFR's.

Mods:

Stock SRT-4
AEM Short arm
Mopar 2.5 catback
Stock WGA
Stage 0 PCM (Stock)
Fuel Pump Rewire Done.

[duster360]

12.2-12.8 is ok as long as LT and ST knock are under 1.0 degree. Datalog and see where you are.


If you want a richer A/F, try adding 15% fuel from 5K-7K. I see you already have the pump rewire done. With a rewire and 2004/05/S1 injectors, maintianing an A/F of 11.5 is perfectly doable but not with 2003 injectors. If adding fuel make no difference in the A/F, you're possibly at the limit of you current fuel system. A WOT fuel pressure test will tell you for sure.


The stock turbo will drop boost to around 14-16psi regardless of which wga you use.

[kmskovenant]

I have Canadian SRT-4 2004. By adding fuel means loosing power, right? But you saying 12.6 is safe at the redline? I'm noob with predator. I tried to do real time log with my laptop and I did second and thrid gear pull to the redline. There so many settings out there, I need to figure out which one is LT/ST knock but i rememeber seeing black square with Knock Retard (-3000/0.0) and it says there 0.0 and ARF square shows 11.77/14.08 I gotta try again and post results later on.

[gizmodo]

Adding fuel does not mean losing power.

You need a wideband to monitor air fuel ratio. The PID you are talking about (Desired FAR) is only what the PCM is trying to get, not what is actually happening.

[kmskovenant]

So how can I see if I have a knock or not using Real Time in Data Viewer? Where to look for LT/ST knock number on the left in menu? Should I use graphical option instead gauge? Because in my log shows only TOTAL knock

[gizmodo]

You need to select the ST and LT Knock PIDS before you start datalogging. What PIDs are you logging? Look here for a list of the PIDs to log: http://www.srtforums.com/forums/f384/wh ... ost6831256

[kmskovenant]

There is no ST/LT pids in my Knock section..Only TOTAL knock which i can select or deselect..that's all..but if i open someone else log just to see, i can see LT and ST

[gizmodo]

Requery the vehicle. It is the button that looks like a car.

[cor430vette]

Wait a minute this guy is totally stock essentially ...there is no way that the flash 93 - should be thinning him out ...I was told that the canned 93 tune would NOT thin you out ??
A 2.25 exhaust to a 2.5 exhaust (mopar exhaust) should not be causing this...I was told that no wideband needed on completely stock...more BS I guess....???

[bighemitex]

Wait a minute this guy is totally stock essentially ...there is no way that the flash 93 - should be thinning him out ...I was told that the canned 93 tune would NOT thin you out ??
A 2.25 exhaust to a 2.5 exhaust (mopar exhaust) should not be causing this...I was told that no wideband needed on completely stock...more BS I guess....???

you're busting balls over this, and i will say this, i have had other tuners that are supposed to be plug and play and when they had a problem(which i did have a knock problem with my last programmer) there was no user adjustable fuel and spark options or option for a custom tune to fix the problem, i just had to deal with it until i got the predator. that being said, diablo makes a pretty good one size fits all canned tune but they can't account for mechanical condition of your car, gas quality in your area, atmospheric conditions etc...as for the no wideband needed thing, if you are serious about performance a wideband should be on your to do list.

[cor430vette]

Got it ....looks like if you buy a diablo ...you need a wideband...I was trying to keep 100% stock is all and a afr guage kinda defeats that goal!!

Thanks

[bighemitex]

Got it ....looks like if you buy a diablo ...you need a wideband...I was trying to keep 100% stock is all and a afr guage kinda defeats that goal!!

Thanks

using a programmer kinda gets rid of that 100% stock thing you're going for when it modifies your car's brain.

obviously you don't "got it", a wideband is not an absolute necessity. your car isn't even the one this topic is about, seems like you are exhibiting some troll like tendencies and quit trying to hijack threads, keep it in your own thread..

[gizmodo]

You could still be 100% stock with a wideband. You don't have to replace any of your stock parts when you install a wideband. You just seem like a whiner.