Hi Hondata,
Can you tell me if this is normal:
I have seen 2 datalogs of 2 FN2 civic with diferent intakes and OEM TB, both had normal wot map pressure between 1000 and 950.
After installing a bigger TB (TSX one) both cars have very low map pressure start at max 940 and goes to 900 at rpm cut.
I have seen datalogs with spoon big TB and the pressure was the normal 1000 and 950. Seen datalogs from 2 FD2 with bigger OEM TB and the pressure was the normal 1000 and 950.
Why the TSX TB cars have lower map pressure? Can this affect the power because this cars are not runing in the 10 column at wot for example?
Can be a leak?
Thanks in advance
low map pressure
Wile on that subject,
I use a 70mm Sponn TB, and my presure is at 980mBar @ 3000rpms finishing at 945mBar @ 8600rpms
But..., I realised that at WOT, the throttle Pedal never goes past the 91% mark, and on the tables it doesnt go to colum 10 in High Cam (does on low cam)!
Thoughts??
I use a 70mm Sponn TB, and my presure is at 980mBar @ 3000rpms finishing at 945mBar @ 8600rpms
But..., I realised that at WOT, the throttle Pedal never goes past the 91% mark, and on the tables it doesnt go to colum 10 in High Cam (does on low cam)!
Thoughts??
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So, no one can run Colum 10 From top to bottom?nunoctr wrote:yes. the 91% is in all cars. It's 100% but don't know why only read as high as that.
When you are above 960 map pressure it's at column 10, only near the end goes down that and goes to column 9. Clean your air filter and you can see a improvement
normal.
I have alot o areas where im above 960mBar and still colum 8/9.
How can we improve MAP??
Regards
The MAP is measuring the absolute pressure inside the manifold. At WOT at low RPMs, this is just going to be whatever the outside barometric pressure is. This changes constantly, and is also effected by altitude. If you drive up on a mountain, the MAP will go down. If you go down in a valley, the MAP will go up. MAP might be higher on Tuesday than it is on Friday, just due to weather.
Basically, the MAP at low RPMs has nothing to do with the TB. The only thing that you would hope to see different is at high RPMs where the stock TB might not flow as well as a larger bore.
Basically, the MAP at low RPMs has nothing to do with the TB. The only thing that you would hope to see different is at high RPMs where the stock TB might not flow as well as a larger bore.
'06 NFR S2000