Mat correction formula

Tuning concepts, methods, tips etc.

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slow_hemi6
Super MS/Extra'er
Posts: 4122
Joined: Fri May 07, 2004 3:33 am
Location: Australia

Re: Mat correction formula

Post by slow_hemi6 »

lagos wrote:
slow_hemi6 wrote:Sensors can heatsoak and give false readings of the air temp. Can be especially bad on maifold mounted IAT's and turbo cars can blast them with some pretty hot temps and they can be slow to cool down when you go off boost.

Its true but a heat soaked sensor should read a higher temperature, and make the car run leaner.
I have found heat soak to only be an issue in the summer time when the car is at idle or has been turned off and restarted. Thats when IAT start to climb to unrealistic values above 120F. In those cases, you should adjust the MAT compensation table to avoid the engine running lean.
We get about 2 weeks of coldish weather here and I have a TBI mounted IAT that heatsoaks. My MAT table has been fairly well modified. Had fairly bad restart issues that led me along that path.
Find the Manuals up top under Quick links: Manuals. :RTFM:
Cheers Luke
Newsamo86
MS/Extra Newbie
Posts: 8
Joined: Tue Jan 19, 2016 1:24 am

Re: Mat correction formula

Post by Newsamo86 »

Monza very good track but at 80% of time yu are on wot....almost
straight track...so engine is under heavy load ;)
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