Racer X Intake manifold design, development, and results

[NoHaveMSG]

Originally Posted by captain awesome

That's no bueno. I'm probably going with SPC arms with lockouts as I've recently read of Whiteline failures on the early production parts. Makes me paranoid about one snapping now.

The SPC's are great, I have been running those for a year, they are very burly and have lots of adjustment.

[Jeff@Racer X Fab]

Originally Posted by captain awesome

You are probably right on that. If I get around to a 91 test on the RX intake I'll have all the data to give them a fair shake. It's possible I have just bought a really expensive "power blocks" intake, but it does reduce leak points in some regard. The RX intake also keeps stock location for injectors, so there may be some benefit to that as well.

Curious what issues you had with the toe arms.

I have been keeping an eye on the thread, I am not ignoring it. I typically will not respond unless it's absolutely needed. I prefer to see unbias comments and opinions posted. Thank you for posting your dyno results, I do understand that it's not a cheery and glowing review, but results are results. Your results are what I would expect for your modifications. We noticed that when we added an exhaust header the difference in performance became less and when we jumped to the e85 with the exhaust it was even less.

A few things worth mentioning, the best results we ever had were from the OEM exhaust header, OEM exhaust, and the OFT stage 1 tune. We did not perform any testing that utilized specific tuning for the manifold. We did reach out to OFT and ask for their assistance but they did not help. In addition, we did mention several times that we never tested above 7000 RPM. Finally, there are far too many variables when it comes to the exhaust header and I do not know the effect of that on the intake manifold and we are not able to test each variant. We used a Tomei exhaust header and Q300 exhaust.

The relevant posts if you would like to review them are 49, 105, 111, and 145.

If you feel that you have been misled please email and we will do our best to right that wrong.

Originally Posted by NoHaveMSG

Can't get zero toe with over -2 camber in the rear. They won't adjust down short enough, they hold a little bit of toe out sucked all the way in.

We typically do not respond to social media messages. I do know that we had issues with gmail for a few months where responses were being sent to spam or junk folder. We would have responded to your issue. I would specifically ask if you tried using the OEM cam bolts instead of the lockouts we provide with the kit. If you would like, please reach out to us again I would be happy to help, sorry you had this issue.

[captain awesome]

Originally Posted by Jeff@Racer X Fab

I have been keeping an eye on the thread, I am not ignoring it. I typically will not respond unless it's absolutely needed. I prefer to see unbias comments and opinions posted. Thank you for posting your dyno results, I do understand that it's not a cheery and glowing review, but results are results. Your results are what I would expect for your modifications. We noticed that when we added an exhaust header the difference in performance became less and when we jumped to the e85 with the exhaust it was even less.

A few things worth mentioning, the best results we ever had were from the OEM exhaust header, OEM exhaust, and the OFT stage 1 tune. We did not perform any testing that utilized specific tuning for the manifold. We did reach out to OFT and ask for their assistance but they did not help. In addition, we did mention several times that we never tested above 7000 RPM. Finally, there are far too many variables when it comes to the exhaust header and I do not know the effect of that on the intake manifold and we are not able to test each variant. We used a Tomei exhaust header and Q300 exhaust.

The relevant posts if you would like to review them are 49, 105, 111, and 145.

If you feel that you have been misled please email and we will do our best to right that wrong.

I definitely don't feel like I have been misled. I bought the intake with all of your data in mind. There was hope it would be better, but I knew it was a slim chance. In the end it will actually work out for my purposes so I'm not bitter.

[NoHaveMSG]

Originally Posted by Jeff@Racer X Fab

We typically do not respond to social media messages. I do know that we had issues with gmail for a few months where responses were being sent to spam or junk folder. We would have responded to your issue. I would specifically ask if you tried using the OEM cam bolts instead of the lockouts we provide with the kit. If you would like, please reach out to us again I would be happy to help, sorry you had this issue.

No problem, I know how it is with stuff getting stuck in spam filters. I only ever used the arms with the eccentric lockouts, never tried with the OEM cam bolts. It was more to make you guys aware of it. There looks to be enough room to take some off of the main body of the adjuster, I was going to chuck them in the lathe and take an 1/8 off each end at some point.


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