turbosmart bov worth it?

[DaleNixon]

Just try it out and monitor your fuel trims. If they are super high, either get tuned for it or get rid of it.

 

[R3B]

Well I don't have a afr gauge to monitor it. But would I know a difference in ride quality?

 

[Abilor]

Well I don't have a afr gauge to monitor it. But would I know a difference in ride quality?

Not until engine detonation.

Don't mean to freak you, really, consider investing in dashhawk. DaleNixon convinced me to get one, and rightly so. Plus it works on any car with ODBII port, so it holds a lot of value.

 

[DaleNixon]

If you absolutely don't have a monitoring device, just reset the ECU by disconnecting the negative battery terminal during the Cobb SRI install and drive the car like a grandma for 100 miles.

Don't even think about getting on it hard until those 100 miles are up. At that point, the car should know how to handle the added airflow. You shouldn't get a CEL or anything, but a Dashhawk would reveal things you just don't see with the factory idiot lights.

 

[R3B]

Yea I'm just hoping it won't mess up alot. How much does the dashhawk run? Is the mscai the best for the car

 

[Abilor]

~250. Worth every penny.

 

[Abilor]

There's no best, just what's best for you, which is why you need dashhawk FTW.

 

[R3B]

Will the turbosmart help at all with a good tune? Will if effect anything with the Sri? And where can I find a dashhawk at?

 

[Abilor]

http://siteground207.com/~protegeg/product_info.php?cPath=160_259&products_id=849

 

[SubieKiller3]

Actually as long as you maintain proper AFR, trims aren't that big of a deal, but when your ECU is correcting by a factor of 24%, and 25 to 30% is the upper limit, it gets a bit scary.

so what is a proper AFR and what should the fuel trims look like to be running safe?

 

[DaleNixon]

At cruise your car will try to keep it around 14.7:1. You'll usually see it bounce around in the 14.3 - 14.9 range while cruising. When you really go WOT you'll see the number decrease into the 12:1 and sometimes even as low as 10:1 after a few seconds of high boost.

Fuel trims are technically safe once the ECU has learned the characteristics of your engine with its mods and they stabilize. The car can only adjust around +/-25% though, so when I see my trims at +24%, I get concerned.

I think most people would agree that -5% to +5% is a pretty good number for LTFTs.

 

[Kain]

At cruise your car will try to keep it around 14.7:1. You'll usually see it bounce around in the 14.3 - 14.9 range while cruising. When you really go WOT you'll see the number decrease into the 12:1 and sometimes even as low as 10:1 after a few seconds of high boost.

Fuel trims are technically safe once the ECU has learned the characteristics of your engine with its mods and they stabilize. The car can only adjust around +/-25% though, so when I see my trims at +24%, I get concerned.

I think most people would agree that -5% to +5% is a pretty good number for LTFTs.

You know what would be funny in a non-haha sorta way is if after all this time and money trying different intakes and testing, that the LTFT readings are from a bad OBD-II port.

Well, OK, I would haha.

 

[R3B]

ok so basically i just have to take it easy once the sri and bpv are installed for a bit so it recognizes then im good to go?

 

[MS3 GT]

go for HKS or SYNAPSE....................HIGHLY RECOMMANDED!!!

 

[SallySpeed3]

Just installed my Turbosmart Hybrid, granted I've only driven with it for about 10 miles but I'm happy so far. My stock bpv must have been leaking because the car definitely seems faster, and the sound is very distinctive. And I know it should be least important, but I think it looks awesome in the engine bay. If you're going to mod your car, why get stuff like forge that looks just like stock?

 

[R3B]

Well just got the Cobb Sri today waiting on the turbosmart . So the hks dosent effect the trims as bad as the Cobb?

 

[ElSpeedDiablo]

Now, I know that it's not good for our cars to run vta, but with the hybrid you can run 50/50. So will it still be harmful to drive it on 50/50 as apposed to full recirc. Sound doesn't bother me much, I don't care to be the loudest or loud, but I don't really like the sound of the turbosmart in full recirc, on 50/50 on the other hand it sounds great!

 

[MSMS3]

Now, I know that it's not good for our cars to run vta, but with the hybrid you can run 50/50. So will it still be harmful to drive it on 50/50 as apposed to full recirc. Sound doesn't bother me much, I don't care to be the loudest or loud, but I don't really like the sound of the turbosmart in full recirc, on 50/50 on the other hand it sounds great!

IMHO, any VTA is sending pre-metered air away from the intake after the MAF has already measured it and sent its info to the ECU. Result: Air/fuel mixture will be too rich.

The ECU thinks that air's going into the intake manifold and through the intake valve into the combustion chamber, but some of it got vented to air. So, it tells the injector how much fuel to shoot. But it's telling the injector the wrong thing when you VTA, based on its false belief that all the metered air is going to be mixed with the fuel. More fuel gets fired from the injector than the engine should be getting.

Since our cars run rich as hell to begin with, VTA (any amount) only makes a bad problem worse, IMHO. Harmful? Maybe not. Good for performance - no.

 

[R3B]

so if i run full recirc ill be good to go?

 

[SallySpeed3]

I switched mine to 100% recirculation yesterday. Just gotta twist off the horn and put it in the little circle plate they give you. If you look at the stock valve, there is no way for it to VTA, this car is supposed to recirculate all the time, thats how I look at it. $320 I guess is alot for just a BPV, but oh well, its shiny and it looks good, lol.