thank you.

well... i personally know plenty of people that have replaced the top grille with JDM ones, and none of them allow any airflow as well. like i've said before... it was designed that way.

 

The more air going over the car and the less going under the better at any speed, The body of the car is smooth the under carraige has a lot of nooks and crannies to catch air causing the vehicle to have a lot more drag and get lees fuel mileage. A few years ago a college to a Chev Mailabu (6 cyl) and made a smooth cardboard & duct tape under carraige they did a before and after highway fuel mileage test the car pick up almost 3 mpg just making the air flow under it better.

 

So your point is that the college students got great mileage right up to the point where the cardboard caught fire due to exhaust heat, then burnt to the ground?

 

You guys do realize this engine is water-cooled, right?

 

wait... WHAT?!?!?! i thoght we were talking about snowmobiles
















im pretty sure they knew that...

 

Then why would someone worry about the air flowing around the engine compartment and disregard the cooling system? Boggles my mind...

 

whoknows

 

the "bug" issue is real with the billet grilles
i have a painted valve cover cover and the bugs go right thru and get WELDED onto the valve cover cover
adding a block off plate was my only solution

if cooling is an issue...add an oil cooler to the car
and a seperate trans cooler for autos
the factory trans cooler is built into the radiator and does not hold up under lengthy "spirited driving" sessions

 

Says Who?

 

me....after a few "laps" on a local twisty the trans has trouble deciding what gear it wants
and once back on the highway has trouble shifting into OD
i would call that a heat issue as it does not occur under normal circumsatances

 

Sounds like more of a ECU issue rather than tranny 'heat' issue. Did you put a tranny cooler on it? And if so, did the problem stop? I AM a firm believer in tranny coolers, although I haven't put one on my xB yet. I have issues with my tranny/ECU but mine is more along the lines of shifting into OD too soon ( I think, anyway) and when getting back on the gas to get up to speed after slowing for either traffic or a light, it doesn't downshift as soon, if at all, as I feel it should.

 

I think its related to how the car tries to adapt to the driving style. When I've had my battery disconnected, which resets the ECU, the shift points seem really low at first, but after driving it like I normally do for a while they come back up. Just gotta train it right. I think that's one of the reasons that people on testdrives call the auto a dog. It's not broken in, hasn't learned, has been driven slow cuz theres a salesman along...

 

Well, mine is 9 months old and still isn't 'trained'. LOL.

 

I'd disconnect the batt for 5-10 minutes, reconnect it and drive it like you rented it for the first week.

 

Trans temp is best measured with a thermometer and the stock cooler is quite effective for the XB. The ECU has some logic and learning programs that vary shift points and try to anticipate driver input based on past habits. Also the hill ascent and descent logic can be goofy (try it with cruise control). I think this is probably what you are feeling. Additional trans coolers can be helpful on tow vehicles ans such but for a norml car they actually do more harm than good. The trans cooler is in the radiator for a reason. It warms up the fluid when cold and this is just as important or more so than cooling the fluid. Modern torque converter design(on a normal passenger car) with a locking converter actually generates very little heat compared to an older design. If your driving style necessatates a trans cooler, you would be well advised to change your driving style!!!

 

^^^ What about using the 'factory' Trans cooler with an aftermarket one? Probably the number one killer of auto trannies is heat. I'm not saying the xB needs one (partly why I haven't put one on yet).
ScionicMan...I reset my ECU by pulling the fuse to help with MPG, but it is the same...both shifting and MPG.

 

no cooler yet
promised myself to finish the "pretty parts" before starting on the "aggressive" parts
i also plan to switch trans fluid to AMSoil
then think about the cooler

but this is sooo off topic.....

 

^^^ I was thinking that too...about 10 posts ago.

 

Get a hood with a hood scoop or fab a scoop and call it a day, like i said on the 1st page. Areodynamics doesn't get hurt too bad with the right design, and it will help with the "cool down" process slightly. Motor will also be able to run slightly cooler with constant cooler air flowing through the bay.

This is what i did, vis racing CF techno-r is the hood i have, 1'' scoop. I get compliments all the time.

 

A functional hood scoop will decrease airflow through the condenser and radiator. How that will help with cooling is beyond me.....