Nissan 370Z Forum - View Single Post

JB1 · 10-17-2009, 01:19 AM

I bought a set of Takeda intakes because they were affordable and easy to install. But after seeing The Dreamers dyno results I felt like they are a waste of money. It looks like the Takedas make the engine run rich and therefore do not make the promised performance gains. Most likely due to the fact that they get the intake air form within the hot engine bay.

I installed the intakes last month, but besides the nice sound I can't really detect any performance gains. (this based on my un-calibrated butt dyno, even though this "dyno" did feel the gains from my Berk HFC's installed 2 months ago)

To take a more scientific and educated approach to this whole modification process I decided to get a Scangauge. Mainly to measure air intake temps, as these seem to have a big effect on the performance of the intake system.

So, I figured, I might as well share my "results" here to see what you guys have to say about the effectiveness of these intakes.

Well, with the Takeda intakes I have been steadily running Intake Air Temps of about 20 to 25 degrees over ambient in the past 2 weeks. Note, this only at 45 MPH or more. If the speed is below 45 MPH (in town or stop and go trafic) IAT's quickly go up to about 140/150. (oil temp is stable at about 200/210). Ambient temps have been between 65 to 40 degrees here in the Chicago area.

Yesterday I noticed that I can also read A/F ratios with the Scangauge. In the past 2 days of commuter traffic, the A/F ratios hover around 13.5 to 14.5. This looks to be quite good to me but the Long term Fuel trims are at -4, so this would indicate a correction for running a bit rich.

AIT's look high to me as well, but A/F and LFT look OK to me. So based on these last two values there is no reason for bad performance from the Takeda's

Ignition timing as indicated by the scangauge shifts between 53 to -7. The -7 value only appears at cold start (during the "Cat light off" or "Cat warm up"). Other then that the values are always " + ". (experts, please correct me if i'm wrong).

So, as I by no means am an expert in interpreting these figures, I wonder what you guys have to say...

10-17-2009, 01:19 AM	#1 (permalink)
JB1 Track Member Join Date: Mar 2009 Location: Chicagoland Posts: 748 Drives: 09 Nissan 370Z sold Rep Power: 17	Takeda intakes and Scangauge info I bought a set of Takeda intakes because they were affordable and easy to install. But after seeing The Dreamers dyno results I felt like they are a waste of money. It looks like the Takedas make the engine run rich and therefore do not make the promised performance gains. Most likely due to the fact that they get the intake air form within the hot engine bay. I installed the intakes last month, but besides the nice sound I can't really detect any performance gains. (this based on my un-calibrated butt dyno, even though this "dyno" did feel the gains from my Berk HFC's installed 2 months ago) To take a more scientific and educated approach to this whole modification process I decided to get a Scangauge. Mainly to measure air intake temps, as these seem to have a big effect on the performance of the intake system. So, I figured, I might as well share my "results" here to see what you guys have to say about the effectiveness of these intakes. Well, with the Takeda intakes I have been steadily running Intake Air Temps of about 20 to 25 degrees over ambient in the past 2 weeks. Note, this only at 45 MPH or more. If the speed is below 45 MPH (in town or stop and go trafic) IAT's quickly go up to about 140/150. (oil temp is stable at about 200/210). Ambient temps have been between 65 to 40 degrees here in the Chicago area. Yesterday I noticed that I can also read A/F ratios with the Scangauge. In the past 2 days of commuter traffic, the A/F ratios hover around 13.5 to 14.5. This looks to be quite good to me but the Long term Fuel trims are at -4, so this would indicate a correction for running a bit rich. AIT's look high to me as well, but A/F and LFT look OK to me. So based on these last two values there is no reason for bad performance from the Takeda's Ignition timing as indicated by the scangauge shifts between 53 to -7. The -7 value only appears at cold start (during the "Cat light off" or "Cat warm up"). Other then that the values are always " + ". (experts, please correct me if i'm wrong). So, as I by no means am an expert in interpreting these figures, I wonder what you guys have to say...