RPW - Camshaft & Cam Gear & Retune!
May 15, 2007, 08:31 AM
#34
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1. With installation and extensive retuning, can we maximise whp/tq with maintaining a reasonable amount of gas milage? Who here reckons we should throw more fuel at mivec point? Considering most of the time highway driving reaches 3500rpm (Don't drive highways too often), this probably won't be good, but what are your thoughts? More in the upper range?
When tuning you will be tuning for a target AFR, the engine itself will dictate how much fuel it is lacking or needs by the AFR.
2. Also with the new camshaft installed, and with retuning, will the mivec point change? The reason I ask this is because I read somewhere whilst searching the threads that generally the mivec switchover will change slightly to a higher rpm range, i.e 4000rpm+
Mivec is controlled solely by the ECU, which is fed a signal from an oil pressure sensor that triggers the Mivec switchover. The reason I mention the ECU at all is because there are certain triggers that will force the ECU to stay out of Mivec, such as the warm up period just after you start the engine.
When tuning you will be tuning for a target AFR, the engine itself will dictate how much fuel it is lacking or needs by the AFR.
2. Also with the new camshaft installed, and with retuning, will the mivec point change? The reason I ask this is because I read somewhere whilst searching the threads that generally the mivec switchover will change slightly to a higher rpm range, i.e 4000rpm+
Mivec is controlled solely by the ECU, which is fed a signal from an oil pressure sensor that triggers the Mivec switchover. The reason I mention the ECU at all is because there are certain triggers that will force the ECU to stay out of Mivec, such as the warm up period just after you start the engine.
Originally Posted by lanzerralliart
I go though tires quickly stockies, and a set of bfg in 16k
Originally Posted by mitvrx
I plan to have it as my daily driver with the occasional track day in mind.
May 15, 2007, 06:08 PM
#35
Looks great - the results from the cam will be very interesting you will probably see gains in all areas and get full use out of the whole rev range thru to redline...
Tires I have Yokahama R1 A Drive I have done over 30kklm on mine and there is still quite a bit of tread left on them I figure about another 15kklm but I have been rotating the tires front to back every 7kklm to keep the wear even the tires are brilliant great for track - drag and street.. but they are expensive for 16" they cost $260 per corner 17" will be similar expect to pay $280
Tires I have Yokahama R1 A Drive I have done over 30kklm on mine and there is still quite a bit of tread left on them I figure about another 15kklm but I have been rotating the tires front to back every 7kklm to keep the wear even the tires are brilliant great for track - drag and street.. but they are expensive for 16" they cost $260 per corner 17" will be similar expect to pay $280
May 16, 2007, 12:08 AM
#36
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Update:
The car is going into the shop next week on Wednesday 23rd at 8:00am.
She'll be in there for 2-3 days and hopefully be ready to be picked up by the weekend!
The car is going into the shop next week on Wednesday 23rd at 8:00am.
She'll be in there for 2-3 days and hopefully be ready to be picked up by the weekend!
Last edited by MITVRX; May 16, 2007 at 03:23 AM.
May 20, 2007, 04:14 AM
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Update:
I've since filled up with Castrol Sports Edge 5W30 Fully Synthetic. (Tried looking for Castrol Syntec - )
I've added the factory oil filter.
Added the 3" pod filter and I am very happy with it. More suction and air flow and I can feel it through the gears (the oil change helped alot). I added some cloth tape around the end of the 2.5" intake pipe to fill the .5" gap.
Took her for a test run and by god she is behaving well. Throttle is exceptionally outstanding and I couldn't be more happy. A slight tap on the throttle at around 3000rpm and shes wanting to rocket out of the gear. Very pleased indeed.
She will respond very well to the cams and I can't wait to let her have her new mod and tune!
Wednesday, coming soon!
I've since filled up with Castrol Sports Edge 5W30 Fully Synthetic. (Tried looking for Castrol Syntec -
)I've added the factory oil filter.
Added the 3" pod filter and I am very happy with it. More suction and air flow and I can feel it through the gears (the oil change helped alot). I added some cloth tape around the end of the 2.5" intake pipe to fill the .5" gap.
Took her for a test run and by god she is behaving well. Throttle is exceptionally outstanding and I couldn't be more happy. A slight tap on the throttle at around 3000rpm and shes wanting to rocket out of the gear. Very pleased indeed.
She will respond very well to the cams and I can't wait to let her have her new mod and tune!
Wednesday, coming soon!
Last edited by MITVRX; May 20, 2007 at 04:24 AM.
May 21, 2007, 04:48 PM
#38
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Update:
Car goes in tomorrow!
As mentioned earlier, I will be giving the tuner a bit of homework -
1. Power run with current tune.
2. Power run with camshaft + cam gears installed w/ stock ecu (haltech ecu reset)
3. Power run with camshaft + cam gears installed w/ tuned ecu.
4. Tune to 98 RON
5. Add more fuel at Mivec switchover
If theres anything else I should look out for, let me know
Car goes in tomorrow!
As mentioned earlier, I will be giving the tuner a bit of homework -
1. Power run with current tune.
2. Power run with camshaft + cam gears installed w/ stock ecu (haltech ecu reset)
3. Power run with camshaft + cam gears installed w/ tuned ecu.
4. Tune to 98 RON
5. Add more fuel at Mivec switchover
If theres anything else I should look out for, let me know
Last edited by MITVRX; May 21, 2007 at 06:55 PM.
May 21, 2007, 06:58 PM
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Yeah I can't wait as well! hehe
She'll be running on a "Dynapack Dyno". It's a hub-dyno, like Dynojet.
Keep in mind, the reading will be around 20-25% lower than if it were running on a roller dyno.
She'll be running on a "Dynapack Dyno". It's a hub-dyno, like Dynojet.
Keep in mind, the reading will be around 20-25% lower than if it were running on a roller dyno.
