turboegg

Jan luis Figerorerueryue was running over 20 psi boost on the afc hack on his d16z6 crx with t3 t4. He was running celice all trac injectors and an afc and said that he could run any boost he wanted. Why does Liam821 and everyone else say you can only run 10-11 if this guy is running double the psi? -tom

BEV@GSCMotorsports

that hack only alters the MAP sensor to a certain point, i can only boost .73 bars (10.5 psi) before i through a code..

Trac226

For more boost, you will need a different map sensor.

T-Blaze

I have the stock map sensor and I can run 15psi without throwing a CEL - explain that 2 me pls.

Trial User

I have heard of people running up to 12 psi and not throwing cels, and now someone says they are running 15 psi. I am running 10 psi with no cels, but sometimes at wot after pulling boost for a while I will get a cel. The normal limit is about 11 psi, but I think it depends on how sensative your ecu and map is.

swlabhot

The guy running the 20psi+ is most likely to have replaced his map sensor to something like a 3 bar one or the like.

15psi man U might ave a problem with ur boost gauge or the vacuum line connecting the boost gauge..

turboegg

No aftermarket sensors involved. just 16+ psi of boost. it is in a CRX with a d16z6. stock ecu and sensor with vafc hack.

swlabhot

Well, there must be something he's not telling us. Give us his full setup so we can see whats actually going on. Without either adj fpr or bigger injectors or missing link or a combination of those its NOT possible to run above 11psi using just stock ecu and map sensor and AFC hack...

legendboy

Ya, I ran the hack for a while and I was running 12-14 psi with no cel. I even ran 18psi with no cel's . Not too sure why I didn't get any...

BorderM3

I've been running 15psi with dsm inj. for a few months with the setup.

It seams to me that the issue is how far you can go on the AFC before it throws a CEL.

I.E. If the max you can pull off with out a CEL is -30 then you can up the boost until you see a lean condition at that trim. If you wanna up the boost more get bigger injectors.

Am i wrong?

bluepearlintegra

sorry but im a beginner on all of this, im just trying to learn what i can before i jump into puting turbo on my teg. But what is a CEL? I just bought a SAFC and i dont know how to set it for my car or what anything on it means so if anyone can point me in the right direction that would be great. Thanks
Cody

5thgencivic

CEL=check engine light

DC2

What injectors are you guys running on that have boosted 15+ psi?

Trial User

I would think they would have to be running 550cc or better. The only thing I can't understand is you can only subtract up to a certain amount with the AFC. How could you run an injector bigger than 550cc and still idle? Even if you turned it all the way down at low throttle settings.

T-Blaze

I am only running 425cc and I hit 15psi over the weekend.

legendboy

I run DSM injectors

aemciv

if you got 550cc injectors you could set the vafc real low, hence lowering the map sensor reading so I would think that you could boost more that way.
just my opinion

prose

ion_four

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T-Blaze &raquo;</TD></TR><TR><TD CLASS="quote">I am only running 425cc and I hit 15psi over the weekend.</TD></TR></TABLE>

The guy on homemadeturbo.com hit 15psi on 240cc injectors...too bad it only lasted for a couple days

I believe the "20+psi crx" that people are talking about is BoostedED9 on this board. As far as I know he has only run 16.5psi, BUT it was with a stock MAP sensor, or so he says, since I haven't seen it I'm thinking that either something is up with his ECU, or his MAP (ie. they are modded or pleasantly fucked up) OR that he has the fuel trimmed out all the way (50%) and the massive pump he has is pushing enough fuel to keep it from running lean, though the MAP sensor has ceased to increase in voltage past some earlier boost level (either 10-12 psi or, 14.7psi, since it IS a 2bar sensor) where it topped out duty cycle.

I knew a guy with a turbo Dodge Omni and he ran 22+psi on a 2 bar sensor (tops out at 14.7psi) and only added a rising rate regulator after months (if not closer to years) because he thought he might be running lean...so, he wasn't adding ANY more fuel after 14.7psi, or so, but managed to make more power and not blow his motor. Really weird. He avoided fuel cut by putting a ~4.5v zener diode inline with the MAP...


so, yeah. I'm thinking you can run alot more boost than some people claim. Does anyone want to hook their MAP up to a voltmeter/pressure gauge and air compressor and see where it hits 5v? If there are no takers I'll just do it myself...

T-Blaze

I checked my boost level again last night to be sure.

I've turned to boost to 8psi. It now shows 8psi on the Auto Meter gauge and also 0.61 on the VAFC... Which I think is about right.

On Saturday however it was showing 15psi on the Automoer but only 0.65 on the VAFC... This Don't make sense... Any suggestions?

swlabhot

You were boosting between 8.6 to 8.8psi. However the discrepancy between 9.2psi on the AFC and 15psi on your gauge is abit of a mystery....

Crxlsturbo

When I used to run the AVC-R boost controller it would always give me inaccurate readings than what I see on my boost. Hence.... don't even trust the boost readings on the Digital Display, always trust what your Mechanical Boost gauge reads...

T-Blaze

I dunno - there's mixed opinions on this one. Some say stick to the mechanical som esay stick to the digital...

Does any1 know 4 sure which is the best???

Joseph Davis

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T-Blaze &raquo;</TD></TR><TR><TD CLASS="quote">I checked my boost level again last night to be sure.

I've turned to boost to 8psi. It now shows 8psi on the Auto Meter gauge and also 0.61 on the VAFC... Which I think is about right.

On Saturday however it was showing 15psi on the Automoer but only 0.65 on the VAFC... This Don't make sense... Any suggestions?</TD></TR></TABLE>

OH MY GOD SOMEBODY FINALLY NOTICED.

Upgrade to 92+ MAP and it'll read .75 before stopping.

If you run 11+ psi on a Honda MAP sensor with the AFC hack, you are a ******* tard. Hondata's blurb about stock MAP being good to 11.3 psi makes me puke, and people who can't understand why something incorrectly reported and embraced as an 11 psi sensor != 11+ psi "without a problem" deserve their blown up engine.

FOR THE LAST TIME:

85-91 MAP = 9.25 psi

92+ MAP = 10.65 psi

If it returned the full 5 volt referrence, which it physically cannot = 11.8 psi (not 11.3 thanks)

It is not a 2 bar sensor, how can it gauge fuel for a 2 bar pressure???


Modified by J. Davis at 10:41 AM 4/30/2003

T-Blaze

I checked my boost level again last night to be sure.

I've turned to boost to 8psi. It now shows 8psi on the Auto Meter gauge and also 0.61 on the VAFC... Which I think is about right.

On Saturday however it was showing 15psi on the Automoer but only 0.65 on the VAFC... This Don't make sense... Any suggestions?

T-Blaze

Upgrade to 92+ MAP and it'll read .75 before stopping.

Cool - That makes sense... Lacking in knowledge doesn't make u a Tard.. The whole point of this forum is to share/gain/pass on knowledge etc etc...

Thanx for clearing that up.