riceball777

I have made 442whp on id1000cc injectors on straight 91 octane and I maxed then on on e85 at 500whp. ID1000s don't come close to maxing out at 300whp weather your on gas or e85. I would start by rewireing your fuel pump with a relay so it gets the power straight from the battery. Use 10-12 gauge wire for the fuel pump.

mar778c

iTrader: (1)

We can make the number as well. However, my tuner decided 450 on 93 is enough. I agreed.

The 475 number was our 1st attempty to go beyond 500+. Totally forgot about the wiring.

blackeg

same here. I stopped at 440 on 93 and made 475 on c12.
stock hardlines -6 from the filter to the rail. 880s. walbro 255 stock wiring stock fpr. under high load im at 13.8 volts

mar778c

iTrader: (1)

Not to derail the OP's thread but I plan to rewire my pump, add a relay, and try again, really soon.

Deepsouthcivic

Delete.

Deepsouthcivic

Delete.

$amGD3

no and no

DC_Legacy

Question OP? Maybe this has been answered and maybe not but what EMS software are you using (your tuner using)?If the same things happening it makes me wonder if he's using Ectune which since its last update is horrible.....

If its happening to another client of his its not the hardware.....either him or a bug


Edit....nvm, seen you have an S300

DC_Legacy

OP, is your tuner at any of these two locations?

B and B

iTrader: (3)

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wantboost

iTrader: (2)

Air and coolant temp sensors can affect fuel trims, ignition advance, tip in enrichment, etc and things of that nature. I would get both sensors wired up in addition to fixing/completing any other issues or tasks before any attempt to retune. The more issues you resolve before another tune means one less thing that could be causing the issue.

LightningTeg

Soooo Im assuming he has monitored fuel pressure to see if its dropping or not? If it is, theres really only one cause and its that cheap filter.

Deepsouthcivic

Delete.

LightningTeg

What part of it

DDTECH

What exactly is the issue you're experiencing, have you been able to properly diag it?? I'm a tuner in louisiana, as well.


I would first verify Voltage at the pump and during a pull. A multimeter on the pump while doing a pull to see if the voltage stays regular, if it does not, then there is a voltage drop somewhere..ground or B+

I would then monitor the actual pressure during the pull.. It could be something like your FPR internally leaking and that causes alot of these issues because it'll not hold pressure and the pressure, will drop during a high rpm pull.


Secondly, Are the proper injector offsets used for the battery offset table?.. I know Steve, so i assume that they are.

I report back, if something jumps out i'm going to read the thread.

DDTECH

You obviously havent researched alot.
There's quite a few guys, including myself.

wantboost

iTrader: (2)

Yea I would just take it to Derek (DDTECH). If he can't straighten you out then no one can

Deepsouthcivic

Delete.

DDTECH

Im in zachary, but ill travel to you. We also have access to a number of dynos around the state. Steve will get you taken care of, but if things go south or you cant figure it out, just holla.

98vtec

you really think a different tuner will fix his "problem"? You know as well as I do that the guys at CNR are more than capable and experienced in tuning and building fast hondas to do a low powered honda.

regardless, if the fuel pressure isn't falling off, the AFR isnt going lean and the engine "sounds" healthy (tuners know the sound), its not possible for 1000cc injectors to be at 100%. The Duty Cycle in these management systems probably aren't all that accurate anyway even with everything setup right in the software.

A b16 makes what? 150-160whp? You added 150whp with 12psi with what looks like a little boost creep. whats the problem with that?

the smartest thing you can do is monitor fuel pressure and make sure it is doing what it is supposed to.

If everything is showing good on your gauges and tests, everything is mechanically happy, throw some more boost at it. If adding more power gets the injectors to a point to where they cant keep up at 350-400whp then you definitely have a problem. You aren;t going to drop a cylinder by testing the "100% mark" a couple times. repeatly overheating the injector will eventually fail but not just making test runs.

raene

I had a similar problem, make sure it's a 255HP as the regular 255 won't hold up to boost fuel pressure. I also had an issue with maxing my 1000ccs at low boost, turned out the FPR was bad and not raising pressure 1:1 with boost. You ARE running manifold pressure to the FPR right...? You should see base plus manifold pressure at the rail under boost through the top end. I figured it out by running my gauge into the cabin with a long *** fuel hose, I'd try the same. One way or the other, I'm running a single Walbro 255HP with a relay, stock lines, stock rail, stock (drilled) regulator, 1000cc injectors, FJO drivers and easily did 450hp. It maxed the fuel delivery before 500hp. It's not your tuners fault if the fuel delivery is maxed with that setup at 300, unless it's running 9:1 under boost :p

DDTECH

Nothing has been reported back, so who knows.

I laid out some things to check and dont know the answer to any of them. Fuel pressure drop and voltage drop could all be a cause.

Deepsouthcivic

Delete.

wantboost

iTrader: (2)

I always hard wire fuel pumps in any application making power. Eliminates any possibility that the stock wiring could pose a problem and ensures maximum and reliable performance from the pump.

That's something I would have done from the start. The oem wiring was never meant to handle the amperage draw from a larger pump.

LightningTeg

I hate to keep asking this, but has the fuel pressure been checked yet under load?