Search throttle coolant bypass

 

Where to get the J's OEM snorkel? My searches are coming up blank.

 

http://www.gotuning.com/product_info...oducts_id=1058

there is also password jdm and spoon. password jdm would probably be the easiest to get, go tuning shows it stock but it does not specify no cutting of oem hood..

 

A previous poster mentioned that if it gets hot enough, the ECU will step in and retard timing. This must be what happened to me the other day as the sluggishness was very pronounced and noticeable. I had been driving through Center City, Philly. Literally stoplight to stoplight. Sitting for minutes at a time. And it was HOT outside. When I finally got to a more open road, I stepped on it and that's when I noticed the decrease in power. I almost felt like I needed VTEC just to keep up with traffic.

P.S. At no time did my temp gauge inside the car exceed the normal amount of bars. I'm guessing this measures coolant temp, not intake air temp? So therefore it's entirely possible for the air to be scorching hot under the hood, even if the actual engine temp is in the normal range? Sorry for sounding like a total newb.

 

Correct, temp gauge on the dash is for coolant temperature, and three bars actually represents an extremely wide range of temperatures - three bars is "fully warm" on AP1, but that just means the coolant is between 160 - 235* F. Normal running temp seems to be 180-200* for me, but on hot days in stop and go traffic I've seen it up to 210* (using OBDII scanner). Radiator fan turns on at 196-203*. If your temp gauge goes over normal operating range, you're already overheated.

 

Wow, that's an eye opener there. Thanks for sharing that, I have always wondered about that.

 

I was driving home from the beach last night and ran into a pretty nasty line of storms. I put the top up (of course) and managed to make it home without hitting any trees that happened to be lying in the street. As I got closer to home, the rain stopped and I got to enjoy a few trips to redline. My car felt so fast! Relatively torquey and it just ripped to redline. When I got home and got out of the car, I realized why... It was downright chilly!! I checked my Weather.com app and it said 69 degrees. It's really amazing just how much this engine is affected by outside air temp. It almost makes me look forward to the cooler days of fall. Almost.

 

What engine isn't affected by air temp boys?

These threads make me wonder what cause you've been driving before. My sedan saw air temps approaching 130f today, outside 101. You can tell the difference. I can feel the timing chain a lot as intake temps pass 115.

 

My previous cars were an Audi RS4 and BMW 335i. I suppose both were affected by outside temps (as all are), but because they had so much torque, the difference was negligible. The difference is much more noticeable in my S2000. I once had a GS-R and RSX that were very sensitive to temps as well.

 

Pardon my ignorance but isn't the MAF supposed to adjust for this?

Yes, I think but the MAF may be less effective at the extremes as are many sensors.

Could it be that the s2000 at high RPM needs to pump more air and is therefore more affected by lower air( oxygen)density?

My old Porsche feels as languid as I do on a hot,humid day. Not noticeable in my truck or Jetts TDI but maybe because I don't drive them hard at all.