slowtan

Is this possible ?? It is the new thing on EBAY. The guy has some negative feedback but both of those were for a Mustang EGR block.. What do you guys think??

Shellhouse

iTrader: (2)

Just do it yourself and save money.

retrodrive

I suggest you do not do that. This is the most ghetto way to add HP.You do cheat the system when you remove that lil pipe. This makes your ECU run your engine rich. Its ok for a short period of time but might damage the engine if used all the time (damages valves). The best way to do the same thing is to get a well tumed S-AFC.

Overall, don't do that.

Shellhouse

iTrader: (2)

What's the problem with the coolant line bypass? I don't see how keeping hot coolant out of the TB would cause the car to run rich or damage valves.

Keith13b

iTrader: (3)

Bypassing the TB in any car is bad news.

Its only benifit will be seen on the first qtr mile run with a cold engine. Don't do it for a daily driver, but thats just my opinion.

Shellhouse

iTrader: (2)

Are you saying it would cause problems due to the intake overheating?

Lex Luthor

You're not going to damage any valves or anything like that, guys have been performing that trick for years. It just bypasses the coolant line that flows through your t-body, the hot coolant heats up incoming air, and as we all know, cooler air is more densely packed with oxygen molecules and will therefore promote better combustion. F-body guys have been doing this for years, among others. I've done it, but not to my SC. That's not to say that I won't, I just haven't had a chance. The only concern is if you're in a cold climate. The line is there to keep your t-body from icing, the throttle butterfly could potentially stick in an open position and send you through somebody's living room. Not likely, but if you do live in a cold climate, then the bypass is not something you want to do. 5-15hp? No. 1-3hp? Yes, and every bit counts, especially with the SC, which looks alot faster than it is.
- Jon

Shellhouse

iTrader: (2)

Yeah, that's what I thought it was for. Mine's been blocked for a while.

The Ikon

Does anyone have a picture of this procedure? I'm just curious...

cyberseano

Here's an example on a GS400 perfomed by BananaGS. I take no credit for this DIY.
But I DID do this to my car a few days ago with a friend.

http://lexusmodz.netfirms.com/GS_DIY/coolant_bypass/

NRG

you will gain .5 hp

carnal_c30

I agree, you can also run into problems with emissions inspections if you do this... but otherwise its safe and it also makes working on the head/intake manifold easier (havent done it on the SC but on the Maxima and the 300ZX it makes things alot easier

Leets

This one of the first mods I did on my GS300 a few months ago. Installing the hose gets a lil tricky, especially with the wrong tools, but besides that it's pretty simple. As for horsepower gains... they're not noticeable. It's true that every little bit helps, but don't expect a big jump in performance. Rerouting the coolant doesn't have any negative effects unless your car is in frigid climates... living in sunny (ashy) southern california I never run in to that problem.

MJHSC400

The coolant running through the TB has also been said to reduce dirt/grime buildup in the TB itself-- by heating it up it's supposed to keep it cleaner due to EGR/ or PCV recirculation-- It seems minimal, but the Nissan SR20 TB gums up and needs cleaning because of it--

mkorsu

3 year old dead thread resurrection.