Blowoff vs dump valve

Riekert · Post by **Riekert** » Thu Sep 27, 2007 8:41 pm

veecee wrote:ding - its now 11:00am!!!

reekhert dude - the post just before tells you how to improve brake fade!!!

My bad sorry!!

200SX MP · Post by **200SX MP** » Thu Sep 27, 2007 8:46 pm

I have both a wastegate and a dump or blow of valve and my car is running good with both no spool up problems nothing and it sounds bludy awsome

Riekert · Post by **Riekert** » Fri Sep 28, 2007 5:32 pm

Bt how can you overcome the over fueling on the std ecu if you replace the bov?

Daniel · Post by **Daniel** » Fri Sep 28, 2007 7:58 pm

fit a recirculating type

Riekert · Post by **Riekert** » Fri Sep 28, 2007 11:28 pm

But will you still get that nice sound?

veecee · Post by **veecee** » Sun Sep 30, 2007 2:52 pm

no.

but you could always buy one of those fake BOV sound systems from autostyle!!!

Riekert · Post by **Riekert** » Sun Sep 30, 2007 5:59 pm

uhm R1800 for the fake sound or R800 for the real deal with little overfueling...

veecee · Post by **veecee** » Sun Sep 30, 2007 7:23 pm

Riekert wrote: uhm R1800 for the fake sound or R800 for the real deal with little overfueling...

hehehehe!!!

200SX MP · Post by **200SX MP** » Tue Oct 09, 2007 7:11 am

R800 FOR THE REL DEAL BABY HEHEHEHEHEHEHEHEHEHEHEH!!!!!!!!!

gregT · Post by **gregT** » Sat Oct 13, 2007 5:44 pm

going back to the dump valve issue, what difference would moving the AFM from the filter side to directly on the intake by the throttle body. would this help with running rich. might be dumb question, but not really sure on this as i quite like the dumping sound.

johansx · Post by **johansx** » Sat Oct 13, 2007 5:52 pm

gregT wrote:going back to the dump valve issue, what difference would moving the AFM from the filter side to directly on the intake by the throttle body. would this help with running rich. might be dumb question, but not really sure on this as i quite like the dumping sound.

The AFM measures air flow by measuring the resistance across the fin wire in the AFM. This wire is heated, so the cold air rushing in cools it. Generally the ait just before the throttle body will be warmer, and compressed, and only flowing when the throttle body is open. Would love to see somebody map that ecu.

But is sounds like a good idea, only measuring what actually goes into the engine, but I don't think the AFM will quite do that job. So try it, it may just work. I once drove promp Pta north to Sandton with the bof venting outside.....

but the idle was jerky and too low, died a few times in the traffic.

veecee · Post by **veecee** » Sat Oct 13, 2007 11:29 pm

johansx wrote:
gregT wrote:But is sounds like a good idea, only measuring what actually goes into the engine, but I don't think the AFM will quite do that job. So try it, it may just work. I once drove promp Pta north to Sandton with the bof venting outside..... but the idle was jerky and too low, died a few times in the traffic.

thats why most tuners use MAP sensors alone, or in conjunction with MAF sensors!!!

"promp" and "bof" - these are interesting terms, what exactly do they mean though???

and low and jerky idle seems to be going around with the sx's!!! just throw all that rebreather crap off!!! its old now, and i wouldn't be surprised if there are blocked hoses, cracked hoses, and broken electronics (like solenoids) in our 15 year old beasts!!!