944-le chip
944-le chip
Kõik kasulik info teretulnud. Foorumeid natuke uurinud ja leidnud, et enamus soovitab Fr Wilksi chipi. http://frwilk.com/944dme/
Veel üks pakkuja. http://www.lindseyracing.com/Merchant2/ ... Code=CHIPS
Kas S2 ja tavalise 2,5 8v kivid on erinevad?
Kas S2 ja tavalise 2,5 8v kivid on erinevad?
Neid kive tehakse vastavalt aju koodile. Ise mõtlesin ka endale tellida kuid mul on ajul mingi X kood ja üldse 944 S aastal 88 ei pakuta eriti midagi.
Mõned lingid http://www.hs-elektronik.com/automarken/porsche-e.html
http://autoth.desyne.com/index-2.htm
Selline naljakas asi
http://cgi.ebay.com/ebaymotors/20HP-O2S ... dZViewItem
Foorumites on palju juttu olnud sellest, et vabalthingaval on kivi paigaldamisel vahet vaevu tunda, mõni aga kiidab, et läks väga palju paremaks.
Mõned lingid http://www.hs-elektronik.com/automarken/porsche-e.html
http://autoth.desyne.com/index-2.htm
Selline naljakas asi
http://cgi.ebay.com/ebaymotors/20HP-O2S ... dZViewItem
Foorumites on palju juttu olnud sellest, et vabalthingaval on kivi paigaldamisel vahet vaevu tunda, mõni aga kiidab, et läks väga palju paremaks.
-
hellraiser
- Postitusi: 818
- Liitunud: 19 Sept 2005 16:48
- Asukoht: Tallinn
- Kontakt:
944 ja chippimine:
Performance gains:
Normally Aspirated Cars
Zero to minimal. Some chips will trade low-end torque for some loss at high end (minimal, in the 5 hp and below range). Damage is unlikely to result to your car, but the engine could be damaged if the programmers were clueless like running the engine too lean which would lead to detonation (knocking, pinging) and the subsequent engine destruction. You may also notice a slightly different engine note because of the advanced timing.
Turbo
Yes, more boost = more HP.
With that being said, all the chips increase boost by controlling the waste gate. The factory tends to roll off boost above ~4500 RPM to lessen the strain on the engine. The after market chips usually increase both the over-all boost and not roll it off as much at high RPM.
However, the head gasket is not a strong point of the 951 engine. The factory has revised the part several times, changed the torque values for the bolts, etc. Almost all the chips claim to have special mappings for the engine control module that allegedly minimize the chance of gasket failure. Some may be better at this than others. But don't fool yourself: running more boost puts more load on your head gasket, the engine, and the rest of the car.
There are several after market suppliers that carry copper, stainless steel and other "exotic" head gaskets. Replacing your head gasket and upgrading the bolts to something like Raceware fasteners may allow you to run more boost without losing a head gasket - for a while. How long your rods and bearings will last is questionable.
Kevin Gross has this wise advice (paraphrased):
"If you overboost the engine, or run the timing wrong or any of a number of sins, something's going to break. Head gaskets are cheap and easy to replace. Holed pistons, burnt valves, etc., etc., are expensive and difficult to replace. Think twice before compromising your 'safety valve' head gasket."
15 PSI or 1.1 bar of boost appears to be the maximum amount of boost you can run with a reasonable margin of safety. Going beyond this (such as the injectors maximum of 17 psi) would require extensive modification such as replacing the fuel pump, seals, transmission to handle the extra power, etc., etc.
If you must have a chip:
See if you can find a used one. Damage for the normally aspirated cars is unlikely to result, so you might as well pick up a chip cheap. If you buy one new, make sure you buy from a vendor that lets you return it "no questions asked". If the chip doesn't live up to your expectations, you can return it.
Performance gains:
Normally Aspirated Cars
Zero to minimal. Some chips will trade low-end torque for some loss at high end (minimal, in the 5 hp and below range). Damage is unlikely to result to your car, but the engine could be damaged if the programmers were clueless like running the engine too lean which would lead to detonation (knocking, pinging) and the subsequent engine destruction. You may also notice a slightly different engine note because of the advanced timing.
Turbo
Yes, more boost = more HP.
With that being said, all the chips increase boost by controlling the waste gate. The factory tends to roll off boost above ~4500 RPM to lessen the strain on the engine. The after market chips usually increase both the over-all boost and not roll it off as much at high RPM.
However, the head gasket is not a strong point of the 951 engine. The factory has revised the part several times, changed the torque values for the bolts, etc. Almost all the chips claim to have special mappings for the engine control module that allegedly minimize the chance of gasket failure. Some may be better at this than others. But don't fool yourself: running more boost puts more load on your head gasket, the engine, and the rest of the car.
There are several after market suppliers that carry copper, stainless steel and other "exotic" head gaskets. Replacing your head gasket and upgrading the bolts to something like Raceware fasteners may allow you to run more boost without losing a head gasket - for a while. How long your rods and bearings will last is questionable.
Kevin Gross has this wise advice (paraphrased):
"If you overboost the engine, or run the timing wrong or any of a number of sins, something's going to break. Head gaskets are cheap and easy to replace. Holed pistons, burnt valves, etc., etc., are expensive and difficult to replace. Think twice before compromising your 'safety valve' head gasket."
15 PSI or 1.1 bar of boost appears to be the maximum amount of boost you can run with a reasonable margin of safety. Going beyond this (such as the injectors maximum of 17 psi) would require extensive modification such as replacing the fuel pump, seals, transmission to handle the extra power, etc., etc.
If you must have a chip:
See if you can find a used one. Damage for the normally aspirated cars is unlikely to result, so you might as well pick up a chip cheap. If you buy one new, make sure you buy from a vendor that lets you return it "no questions asked". If the chip doesn't live up to your expectations, you can return it.
Usa foorumis jäi silma selline link http://www.maxhpkit.com/
Products valikus on toodud pakutavad kivid. Paistab, et oleks ka võimalus kivi tagasi saata, kui ei jää tulemusega rahule.
Products valikus on toodud pakutavad kivid. Paistab, et oleks ka võimalus kivi tagasi saata, kui ei jää tulemusega rahule.