Going for a re-tune.... (Round #2) Updated 10/28/13

[hotaccord243]

Re: Going for a re-tune.... (updated 5/16/12)

Make sure you still have a pulsation damper on the fuel rail feed side.

Everything is looking good my friend. Excited to see what this baby puts down

Alex,
Why would you need that when the FPR will be regulating everything. Basically, I was going to do an AN fitting direct into the end of the fuel rail via a braided line.

I know the shop knows what they are doing but I am curious why.

Thanks! I'm getting excited cause i'm so dang close. I was expecting something needed some fixing prior to doing the actual dyno time, so i wasn't as dissapointed. ha-ha.

 

[akoutmos]

Re: Going for a re-tune.... (updated 5/16/12)

Pulsation dampers are used to subside the shock to the fluid flow when the injectors open and close. If you have AEMPro installed, in the installation directory you will find a 'Instructions' folder. In there there are a bunch of awesome docs for understanding EFI and how to setup your things properly. In the "AEM EFI Basics" document they outline the need for pulsation dampers. I'll quote some stuff below. While i have seen setups not use a damper, personally, i would prefer to have one installed.

Many vehicle manufacturers use a pulse dampener to reduce the pulsations in the fuel rail caused by the opening and closing of the injectors (a dampener also reduces the noise of the injectors). In applications where a new fuel system must be installed, a fuel pressure dampener is integral to ensuring consistent fuel flow to the injectors. AEM fuel rails have a provision for a pulse dampener. The dampener assembly part numbers are:
Honda PN: 16680-PE7-661 Dampener
Honda PN: 16705-PD1-003 Inner Gasket
Honda PN: 90428-PD6-003 Outer Gasket
AEM PN: 2-602 Fitting for Rail

You can still use A/N fittings and what ever you please. Just get a properly size banjo fitting and the Honda damper and you should be good. Doesn't cost much and a good provision

 

[hotaccord243]

Re: Going for a re-tune.... (updated 5/16/12)

Pulsation dampers are used to subside the shock to the fluid flow when the injectors open and close. If you have AEMPro installed, in the installation directory you will find a 'Instructions' folder. In there there are a bunch of awesome docs for understanding EFI and how to setup your things properly. In the "AEM EFI Basics" document they outline the need for pulsation dampers. I'll quote some stuff below. While i have seen setups not use a damper, personally, i would prefer to have one installed.




You can still use A/N fittings and what ever you please. Just get a properly size banjo fitting and the Honda damper and you should be good. Doesn't cost much and a good provision

I definitely understand the idea behind it and appreciate the explanation and see why it is beneficial. Along with the link to the document. After reading that, I found out that yes, that will remain on there, I was thinking of something completely different.

I'll have to check into those documents and read up as it's quite interesting and noteworthy to read!

 

[x5carl3tMurd3rx]

Re: Going for a re-tune.... (updated 5/16/12)

Well good news and bad news..... ha-ha.

Good news - It runs great, driveability is greatly improved.

Bad news - The stock fuel pump in the tank is starving the Bosch 044 in line fuel pump and at higher RPM's the fuel pressure drops about 10psi or so and starving the engine.

I have on order a deatschwerks in tank fuel pump and re-wire kit, and I will be cutting the hard line and adapting it to a stainless steel line with AN fittings and run it directly into a AEM fuel rail and Pressure Regulator for better and less restricted flow. Along with removing the EGR and blocking it off due to it being un-needed.

Overall a good thing that I found this out now. hands down. Plus I have the in for the shop I am working with, so got a killer deal and now I don't have to f*** with any fuel lines or headaches of a leak, and if there is one it's on their hands.

It sounds incredibly mean on the dyno, been a while since i've been outside the car and heard it run under boost, and almost wet myself.

Parts should be in within a few days and I'm guessing at the latest early next week, they will put everything in, and throw it on the dyno the same day. VERY VERY Close!

FYI I was told basically what I should expect out of this setup and i'm not spilling until the evening of. because I can.....

I always thought that would have been a problem but since you had no problems for so long I figured I was wrong haha. wish I had said something now to maybe have saved you some time. oh well. so close bro!!

 

[hotaccord243]

Re: Going for a re-tune.... (updated 5/16/12)

Well fixed a few things while I'm waiting for parts:

- Rewired the fuel pump as it had a bad ground so it's more reliable until new parts.
- Removed the EGR and bought a Aluminum T6 CNC block off plate and gasket.

I tell you what though it runs a he** of a lot better without the EGR system.

Next I want to test out if the MSD ignition system is causing some mis-fires/ignition problems due to me switching over to E85, as it just started happening after the switch...

It sure is fun to drive the car again, and i'll be glad to have the fuel system up to par.
After the fuel rail, i'll start working on rewiring the injectors and cleaning up all the wiring in that area and all others as well....

Still no word on if the parts are in yet or not, but i'll keep updating when i know more.

 

[NASOHC]

Re: Going for a re-tune.... (updated 5/16/12)

NASOHC is Tuned In to your thread Best of luck!!!

 

[Russianred]

Re: Going for a re-tune.... (updated 5/16/12)

Nice job Devin, did you do anything else besides install the blockoff plate and remove the EGR physically? Like did you have to re-wire anything to complete the delete? Let me know. I already bought a P2R blockoff plate for mine as I will be doing this same exact thing.

 

[hotaccord243]

Re: Going for a re-tune.... (updated 5/16/12)

Nice job Devin, did you do anything else besides install the blockoff plate and remove the EGR physically? Like did you have to re-wire anything to complete the delete? Let me know. I already bought a P2R blockoff plate for mine as I will be doing this same exact thing.

Nikita,

No, all you have to do is remove it, leave the plug where it sits (unplugged) and block off with the plate and a new gasket. That's all, pretty easy, and since they get clogged, you won't have to worry about any restriction there anymore....

 

[x5carl3tMurd3rx]

Re: Going for a re-tune.... (updated 5/16/12)

I'll probably be doing the same to mine at some point.

 

[AFAccord]

Re: Going for a re-tune.... (updated 5/16/12)

I've had mine blocked off for years now with the KMS plate. I'm surprised to hear that it made such a noticeable difference Devin, but that's great to know! Do you think it was just contaminating the intake charge? What effects do you think it had when the EGR system was pressurized under boost?