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PostPosted: Sat Sep 30, 2006 5:55 pm 

Joined: Sun Sep 24, 2006 7:21 am
Posts: 6
Freshly installed S300 into a P28 ECU. I can't spot what's wrong in the datalogs. Car idles high (1500-2000) for about 10 secs and then dies. I have the stock map sensor and idle speed motor plumbed into the ITB. TPS is the TWM supplied unit and its output looks right except for it reading 2% when closed. Car is running 320 cc injectors, B16A head, B18C block. Please help.


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PostPosted: Sun Oct 01, 2006 7:55 am 

Joined: Sun Sep 24, 2006 7:21 am
Posts: 6
Oops, forgot to mention. Calibration is stock P28 w/ stock injectors 240 & current injectors set to 340 cc.


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PostPosted: Mon Oct 02, 2006 9:04 am 
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Joined: Thu Aug 15, 2002 12:13 pm
Posts: 5726
Location: Torrance, Ca
Switch the mapping to TPS based for ITBs.

The TPS must read 0% when closed.

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PostPosted: Fri Oct 30, 2009 8:31 pm 

Joined: Sun Apr 09, 2006 5:12 am
Posts: 269
ITB setup with I.A.C.V (Street Set-up). You will need a IACV adaptor plate. See

http://www.ff-squad.com/parts/oer.itb

You can also get the IACV Adaptor Plate from
http://www.t1raceparts.com/product_p/t1%20tm%20iac.htm

Keep the vacumm tube to the MAP as short as possible. other you will get a vacumm lag.


1) Primary table (MAP) : 0 rpm to 1,490 rpm
2) Secondary table (TPS) : 1,500rpm to 8500rpm
3) Match the injector duty cycle (%) between the primary (MAP) and secondary tab (TPS) at each load in the 1,490 rpm band to the 1,500 rpm band. Copy and paste the 1490rpm row from the primary laod sites into the seconday from primary to secondary

I hope this can be updated in the Hondata Help as an explantion is sorely lacking in the documentation - Doug (some feedback for you)

If you load the ITB Hondata sample MAP you can see the injector duty cycle between the primary and seconday is approximately the same at the 2500 rpm (It uses 2,500 rpm cutover as oppossed to the 1,490 rpm I noted above - you can play around with this to see what gives the best result - of course if you are doing a track car just use a 100% TPS configuration).

Now you can enjoy ITB, cold start, air-con IACV adjustment with ITB, fast-ilde control


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