maps

Discussions concerning the M7790 cpu

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Fordy
 

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Joined: Mon Aug 31, 2009 2:20 am
Location: Uk

maps

Post by Fordy »

ive got both a stage 1 map and a stage 2 maps from off the shelf chips in the uk for my sr

now im running a stage 2 map currently but the timing isnt very great in the centre to the end of the map its 12 degrees :?

now ive obtained a newer stage 1 map and the timing map on that is alot better optimised

since in theory the only thing between the newer stage 1 mapping and the stage 2 mapping is my 555cc injectors, can i run the stage 1 timing if i get the afrs as they should be? if i rescaled my maps to the same etc etc
Matt
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Post by Matt »

'stages' are typically used as an advertising feature more than capabilities of tune. I'm almost tempted to pull the pictures from this thread because they are releasing part a commercial tune (intellectual property + copyright)

My only recommendation here is to get the tune done properly rather than drop in pretuned chips without a real understanding why one tune is different from the other and how much boost you are runing

Set up the level of boost you require, make sure your AFRs are correct,and then do the timing maps and use headphones to keep an eye on knock as you adjust the maps. Then you can get the timing maps optimal for your configuration. If timing maps are different between two identical setups (apart form injector size then they may be squeezing more power out of one setup but then again boost levels may be different or how boost ramps up etc)

See petes tuning guide for more details
Fordy
 

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Location: Uk

Post by Fordy »

i removed the pics matt i forgot guests can see in here

i may give it ago just i need the weather to warm up here a bit first :roll:
Matt
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Post by Matt »

was 40deg here yesterday 8)
Fordy
 

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Joined: Mon Aug 31, 2009 2:20 am
Location: Uk

Post by Fordy »

another quick question matt

the injector latency on a sr with nismo 555cc should be set to 710us?
currently its set to 580us?

ive had a problem where a one piont or another ive merged it with a stock map and it changed alot of settings so im trying to get it all back to normal for my setup

if i can the latency to 710us will it push more fuel through? cause its running rich enough as it is :roll:
Bernardd
 

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Post by Bernardd »

Matt wrote:was 40deg here yesterday 8)
+ or - ??? it's -32 C this morning....
Legionnaire
 

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Location: Moscow, CFD, Russia

Post by Legionnaire »

-32? Where are you located? Even at our latitude 55deg N. we had only -5 this morning.
Last edited by Legionnaire on Sat Jan 02, 2010 7:17 pm, edited 1 time in total.
Cheers,
Petros Katunian
Bernardd
 

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Post by Bernardd »

I'm just funning with Matt. I'm in Winnipeg and it's warmed up to -31C. Hooray
Legionnaire
 

Posts: 125
Joined: Fri Oct 03, 2008 5:45 am
Location: Moscow, CFD, Russia

Post by Legionnaire »

Congrats on that :D you now spend less fuel for a cold start.

Now what did scientists say about global warming??
i corrected my previous post in order to keep fun in yours
Cheers,
Petros Katunian
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