Hi guys. Last week I dropped my car off with a bunch of boxes I’ve been accumulating, mostly bought here from the forum. They installed a plenum spacer, some APS high flow cats, an APS 2.5” cat back exhaust that was modified for turbo use by fabricating a great looking Y pipe, and a full Nismo intake that already came with the car. A bizarre note, I know I had ordered the 5/16 plenum spacer but they said they had to modify the strut bar to fit it, so that makes me think I received a 5/8, but anyway it’s installed.

They did a quick dyno pull for me before I left, needless to say I was sorely disappointed at 188hp. He said the dyno was a “heart breaker” SAE model or whatever and that nearly everyone is surprised when they see the low numbers. That’s with 19,000 miles, a couple thousand above sea level, high humidity, and probably 80° out. 6 speed MT.
I was a bit concerned and called the tuner back asking if he thought my motor/clutch was ok, but he reassured me it was normal.
Anyway, he sent me the new numbers after everything was installed, gained about 37hp and 39 ft pounds of torque, which actually surprised him. Haven’t picked the car up yet as he’s concerned about the rigidity of the exhaust and wants to add a flex, but says the car sounds awesome.
Cant wait to try it out.

Been trying to upload the dyno forever, nothing

Yea it sure has me thinking. It “feels" strong and powerful, but that says nothing. He says they don’t detect clutch slip, and there’s good compression, maybe his dyno is off??

On another note, what’s up with the new upload feature.... browse device, pick photo, it "loads" onto window, I push Upload, then it disappears. It’s in my Album too. Will keep trying....

Maybe, but they come highly recommended and have a great reputation, and follow up work if needed.

In design, or what do you mean?

They installed everything and then actually tuned it. I think he said they were on the machine a good 5 hours or so.

I get what you mean on the y pipe. Originally I had walked in the shop wanting a dual set up, but he said there’s usually noticeable torque loss down low that’s difficult if not impossible to tune out. So he recommended a y pipe.

Yea I’ve read lots of y pipe threads, and you may be right. I could throw a Motordyne in there someday. I imagine even as it stands the new one must flow better than the stock crap.

So basically my reason for posting was to get feedback, so I appreciate that. I’m wondering if the 37-39 gains were about on par for what I did? As that’s what’s most important, not necessarily the numbers themselves.

I do believe there’s another dyno shop here, so I’ll probably go by and do a comparison. I’m curious what differences or discrepancies may show up.

The motor itself runs fantastically and feels strong.

I believe you are correct, or perhaps the SAE, going to find out tomorrow. Will post.