As other have stated, this car is very sensitive to O2 and MAF sensors, I will recommend to get some MAF cleaner and clean both the MAF and both O2 sensors.

 

This is unbelievable, all owners need to stand up and except responsibility for his/her decision to place aftermarket parts on a car. No one forced these products on you and should have the integrity to live with the results good or bad. From your background on Honda's that should be clear at this point as you have experimented with enough to know. Its like people asking for their money back from the casino after you've lost. If you don't feel like the products are meeting your demands/expectations, remove them, sell them and go back to stock or find something else.

 

A Base-line dyno would have came in handy! Its impossible to find out what YOUR vehicle gained from the parts, When doing a dyno run after the fact. Also ive never ever heard of a vehicle not making any sort of HP from an exhaust and/or intake system! usually you may lose some low end and gain alot of top end but thats it!!

I would be questioning the dyno shop......And/or the way you went about installing the mods!! Like others have stated the products are good, And you seem to be the only one having issues. I would dig deeper instead of throwing the aftermarket manufacture under the bus!!!!!!!!!

 

so much tension....

 

No kidding. At a minimum, drive the damn thing for a few thousand miles and redyno it. If that doesn't work, replace the sensors/clean the MAF or whatever. Chances of it being a faulty exhaust or that every other JoeZ PTS owner having a false dyno run is almost zero.

 

What a bad way to get help here ISFC6, you post only text and no dyno plots? For this case the dyno graphs were more important than your deductions. Besides, I think the dyno operator was very generous in the baseline dyno, 352 WHP with 91 octane gas? I think your issue is the dyno, go to a different shop and re-dyno your car.

 

I guess that I could try that, but my car only has 2600 miles, and the Tom's filter is dry, and contains no oils, so no issues with the MAF.

 

Sorry, but I never had any experience with Honda's.

 

Please read my previous thread and original. I do have baseline dynos.

 

Sorry, but this makes no sense. What did you want me to do? Lie about my results? I simply posted facts and MY experience, as I know that others have posted positive ones. I never said that they made inferior products, as it sounds good and has great fit and finish. All that I said is that I experienced no power gains, and asked what may be the cause, and how to remedy the situation.

 

Juanca, no matter what the baseline numbers were (low or high), the gains should be there consistent with the same dyno, in terms of power gains over baseline, since I used the same dyno. Like everyone else, I was expecting a gain with the exhaust and intake of around 25RWHP and around 20 RWTQ SAE. There are several threads in California with similar baseline numbers and gains after the mods.

My deductions are based upon seeing the dyno graphs myself. As I have not yet received it electronically to attach to this thread. I will have to scan it and post it.

 

Ah, my fault, that was PurduePetes post. I also agree that the gains are there and its a dyno issue. The gains come primary from the deletion of the 2nd cats with/without the rest and when you do the same thing to the OEM exhaust the same gains are there. IMO the only real why to know if you've got the extra HP is to run the car on the 1/4 and look at MPH.

Its cheaper and funner than a dyno.

 

James,

As I am sure you aware, these are bolt on parts and I can safely 100% assure you there is nothing wrong with the Intake or Exhaust you received.
Each part is made exactly the same way with the highest attention to detail to ensure each enthusiasts satisfaction.

If there was a product related or maufacturing issue, I would be flooded with hundreds of unhappy IS-F owners, in many threads & pm's.
This clearly has never happened.!

Your results are troubling yes, but you have made it sound as if we are 100% responsible in finding out what went wrong with your IS-F dyno results..
..Since you clearly did not like my previous suggestion to start the installation and dyno process over again.

You are correct that this is a Public Forum..
SO as a community we will try to help you the best that we can with our Opinions and Suggestions.

Lets move on to helping you with some trouble shooting for today...

You mention the graph shows the F is running richer than stock. This is a bit puzzling..!!

If you are capable, I would like for you to jack up the IS-F (safely).

Crawl underneath and give me 2 clear pictures of the O2 sensors installation and the 4 wires behind the black wire shroud.

What I am looking for is to be sure that all 4 wires in each O2 sensor are free and clear. They must be straight. They can NOT be taut or wound up.

IF they are, the single back to the ECU will be negatively affected.





How quick can you get these pictures today??

- Regarding the Toms Filter my PM says the following:
"Also, as mentioned in your thread, the TOM's drop in filter is a nice filter in conjuction with my intake."

I do not see ever directly recommending it.
All I have ever seen is suggestions that others have made.
As seen in your own thread: Questions about the Joe Z PTS exhaust and Joe Z intake tube...
I have no real world data or personal dynos with any drop in filter, besides OEM.

Also, seems all of our members have had excellent results with the stock OEM Filter.
Besides my above request, I do now recommend you re-install the stock filter, since we are in the process of trouble shooting your issues.

As a side note:
My opinion, as I mentioned earlier, 250 miles of driving in 6 Weeks is just not enough.
Especially with the Dynos being that far apart and no real long term driving time.
Have you ever heard of issues of trying to properly get a SMOG check after an ECU reset has taken place???

Joe Z

 

It would be weird that TOM's which is the european performance of toyota would develop a product that would affect the performance of the car

 

Joe, please PM me your phone number. I will make another appointment to go to the dealership where the installation took place, and will have the technician call you to personally discuss all of this with you. Unfortunately, I cannot lift the car myself. Everyting was checked over twice, and before I took it to the dyno, but I imagine that not the wiring of the O2 sensors.

Below are the dyno graphs. I just scanned the image. Dyno 1 - 3 was stock, and dyno 4 - 7 are with the addition of the modifications, and 250 miles or so worth of driving in one month with several on and off cycles: