Re: Ruff Idle ,Huge Loss of Power
 

Thanks for the tip.

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Re: Ruff Idle ,Huge Loss of Power
 

I found there is still a little bit of glycol in the plenum when i lifted it up a bit so put a rag or paper towels to grab the spill. Mark Haibeck , in his plenum removal video states that there will still be fluid in the plenum when you lift it so be prepared .



Mike

Re: Ruff Idle ,Huge Loss of Power
 

Plenum off and injectors removed . Used one of my plastic panel removal tools to work the injectors out . Worked like a charm . Injectors popped out with very little struggle .https://uploads.tapatalk-cdn.com/201...a57c0644a1.jpghttps://uploads.tapatalk-cdn.com/201...b0e4aec571.jpg

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Re: Ruff Idle ,Huge Loss of Power
 

Hi Mike,

Good to see that you are hopefully getting to the bottom of your issues. I am looking forward to seeing if this fixes the idle and power issues.

I took the Z out for a drive yesterday and the car ran very well. What was interesting though, was when the A/C was turned on, my rough idle and loss of power seemed to return.

The car started to get sloppy again when stopped at lights and in traffic.

Once the A/C was switched off, it drove a lot better (even with the bigger cams and the run-in tune )

Anyway food for thought.

Cheers

Joel

Re: Ruff Idle ,Huge Loss of Power
 

Hey Joel . That is strange indeed . Maybe the guys on the forum can help . Start a new thread perhaps . The AC was not an issue with our car . It felt like it was flooding or running on only a few cylinders . All vacuum hoses where attached when I removed the plenum other than the FPR vacuum line which kept popping off which hinted at the FPR may be the issue and failed . No fault codes appeared either .
Jagpanzer just finished up my FPR which is now a IFPR . Hope to get it back sometime next week . I still have to replace all the o-rings on the injectors and of course the fuel lines going into the IFPR . I thought it might be easier to do the o-rings with the fuel rails attached to the IFPR . I am also using 2 stroke motor oil as my lube to insert the injectors and 0-rings . Looking forward to putting it back together .

Mike

Re: Ruff Idle ,Huge Loss of Power
 

Joel,

If u have bigger cams(and I presume u ported top end), the additional load ur putting on motor when turning on A/C is causing the ECM to use a different part of the VE and SA tables. If u haven’t addressed those areas while tuning, its likely they’re inadequate for handling the A/C request. Plus, the bigger cams lower the overall vacuum at idle so u will probably need to increase IAC steps to maintain idle w the additional load. Maybe even SA.
What happens is that the motor starts to oscillate as the ECM tries to maintain idle and stall saver kicks in. The stock tune will have too much compensation for the larger cams and u get a seesaw effect.

Re: Ruff Idle ,Huge Loss of Power
 

Got the rebuilt IFPR yesterday . Thanks Phil . This adds some serious bling to the motor . Looks amazing .
Replacing O-rings today on fuel rail and fuel lines to IFPR .

https://uploads.tapatalk-cdn.com/201...b1a6bb3924.jpg

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Re: Ruff Idle ,Huge Loss of Power
 

Assembled IFPR to fuel rails.
Hoping to install the plenum tomorrow after functional tests are completed as per Marks instructional Plenum video shows . https://uploads.tapatalk-cdn.com/201...1a83195cbd.jpg

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Re: Ruff Idle ,Huge Loss of Power
 

IFPR and rails back in place . https://uploads.tapatalk-cdn.com/201...acf9a89671.jpg

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Re: Ruff Idle ,Huge Loss of Power
 

System back together . Huge thanks to Marc Haibeck for his instructional Plenum Removal and Plenum reinstallation video . I would have been beyond lost without his help . Now that it's back together, running much better with the IFPR from Phil but still down on power and a ruff idle . I am taking the car to my local garage to have a look and have them hook it up to do a diagnostics .

Mike

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