fiat 1,8 engine tuning
Discussion
hi my 10th car is a fiat barchetta 97 with 60 000 km
i am wondering 1)if it worth the intake mods like bmc and kn etc in my previous car a crx vtec i dyno some intakes and stock airbox give best overall results what about fiat engines ?
2 ) is it safe to chip ? 10 ps for 300e is fair to me if it is reliable
3 ) decat and only back box exaust ? or decat and 2 boxes ?
and final i think 205 50 16 are too big for me and want to change to 195 50 15 superleggiera oz ultralight for betteracceleration and performances
any opinions ?thans for your time and please help as i am new to fiat philosofy
i am wondering 1)if it worth the intake mods like bmc and kn etc in my previous car a crx vtec i dyno some intakes and stock airbox give best overall results what about fiat engines ?
2 ) is it safe to chip ? 10 ps for 300e is fair to me if it is reliable
3 ) decat and only back box exaust ? or decat and 2 boxes ?
and final i think 205 50 16 are too big for me and want to change to 195 50 15 superleggiera oz ultralight for betteracceleration and performances
any opinions ?thans for your time and please help as i am new to fiat philosofy
The Barchetta engine is exactly the same (cams apart)as the unit in my Alfa 155, albeit with 10BHP less. It is easy to chip and filter these engines up to 155BHP. A performance exhaust will free up more power, but further mods will need performance cams (Colombo and Bariani), but the engine will take much more power reliably. However, the Barchetta cams will limit the output, but that is another matter.
You are right to go for the BMC panel. However, I don't personally believe in a decat, but think that a performance (eg Supersprint) manifold and single silencer option would be much better. A decat and single silencer would be loud, and would produce a lot of high frequency sound and consequently sound quite raw.
195/50r15s will work fine.
>> Edited by Alfa Mad on Tuesday 13th September 18:23
You are right to go for the BMC panel. However, I don't personally believe in a decat, but think that a performance (eg Supersprint) manifold and single silencer option would be much better. A decat and single silencer would be loud, and would produce a lot of high frequency sound and consequently sound quite raw.
195/50r15s will work fine.
>> Edited by Alfa Mad on Tuesday 13th September 18:23
thanks for your time......so the cams from the alfa fit in my engine to take those 10ps ? panel filter mean the filter in the stock box ? i see that in my airbox is an airflow meter so free flow cone filters or bmc airboxes probably bo not realy work....chiping is safe ? what is beter brand like superchip or allientech etc ? spark wires do anything ? any other alfa engine thing that give powergains ?
Air filter and exhaust is the place to begin as they will only further enchance any later engine or map modifcations.
Panel air filters (like BMC) will not affect the reliability of the MAF(mass air flow) sensor.
Even a cat back exhaust will help, but the real gains are to be made at the manifold. However, the standard rear silencer is of resonnator type, which has particularly poor gas flow properties. Supersprint are the masters of Italian performance exhausts, but CSC possibly do an exhaust for the Barchetta. For a cheaper yet very good quality rear silencer, try Remus.
The engine itself is similar to the Alfa lump, except it doesn't have Twinspark. This is no bad thing with the 16 valve engine, as the extra plugs are there only to clean the exhaust gasses, and have no performance implications.
The standard Alfa cams are hotter than the Fiat ones. They have a fatter cam nose which allows more high lift valve duration, which makes more torque higher up. Alfa 1.8s and 2.0 use the same cams. Indeed, the Alfa 1.8 cams and timing are the same whether fitted in the 140 or 144PS engine.
The Fiat 1.8 engines come in two guises.
1: The 115PS unit in the Brava and Marea etc. These have very small cam lobes and are no good for tuning.
2: The cam for the Barchetta is larger, and has the same lift as the Alfa cam, but much less duration, so the Alfa cams are still better. You could still opt for a Colombo and Bariani cam set, but you're into serious money then.
I think that you could probably fit the Alfa cams and then have the ECU map changed to a modified Alfa map, rather than a performance map for a Barchetta. With that, and exhaust and filter, I think that it should be possible to raise power to about 155PS.
I would suggest you pm our very own alfanige (Angel Tuning) who should be able to advise you on the possiblity of downloading a modified Alfa map to your Barchetta. This should at least give you some direction, even if you intend to carry out this modifiation later. He may even suggest you put the go faster goodies on first, and then have a bespoke map created.
If you want any help on what parts,(exhaust etc), just ask, and I'll post some links.
BTW, funnily enough, I have a spare Alfa cams from a 1.8 156. It was never my intention to try to sell them on though- just thought I'd mention it though.
Panel air filters (like BMC) will not affect the reliability of the MAF(mass air flow) sensor.
Even a cat back exhaust will help, but the real gains are to be made at the manifold. However, the standard rear silencer is of resonnator type, which has particularly poor gas flow properties. Supersprint are the masters of Italian performance exhausts, but CSC possibly do an exhaust for the Barchetta. For a cheaper yet very good quality rear silencer, try Remus.
The engine itself is similar to the Alfa lump, except it doesn't have Twinspark. This is no bad thing with the 16 valve engine, as the extra plugs are there only to clean the exhaust gasses, and have no performance implications.
The standard Alfa cams are hotter than the Fiat ones. They have a fatter cam nose which allows more high lift valve duration, which makes more torque higher up. Alfa 1.8s and 2.0 use the same cams. Indeed, the Alfa 1.8 cams and timing are the same whether fitted in the 140 or 144PS engine.
The Fiat 1.8 engines come in two guises.
1: The 115PS unit in the Brava and Marea etc. These have very small cam lobes and are no good for tuning.
2: The cam for the Barchetta is larger, and has the same lift as the Alfa cam, but much less duration, so the Alfa cams are still better. You could still opt for a Colombo and Bariani cam set, but you're into serious money then.
I think that you could probably fit the Alfa cams and then have the ECU map changed to a modified Alfa map, rather than a performance map for a Barchetta. With that, and exhaust and filter, I think that it should be possible to raise power to about 155PS.
I would suggest you pm our very own alfanige (Angel Tuning) who should be able to advise you on the possiblity of downloading a modified Alfa map to your Barchetta. This should at least give you some direction, even if you intend to carry out this modifiation later. He may even suggest you put the go faster goodies on first, and then have a bespoke map created.
If you want any help on what parts,(exhaust etc), just ask, and I'll post some links.
BTW, funnily enough, I have a spare Alfa cams from a 1.8 156. It was never my intention to try to sell them on though- just thought I'd mention it though.
thanks for all alfamad this week i will tell you impretions on chip and exaust ... i will trye to instal my cda bmc to give it a trye and if it is noisy or not see gains go for panel bmc and shell the cda ......i am living in greece and i can not find any decent manifold except supersprint but it is expencive like the colombo cams ...you cant have it all in this life ....i do not want spend over 1000 e for tuning as i am in pain yet for my crx with 200 ps and spend over 10 000e for tuning and shell it only 6000e
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