Discussion
I have a 1.4 SEAT Ibiza. Reading my owners manual, the engine comes in three versions. 60bhp, 75 bhp (which I have, I think), and 100bhp. Looking at the data in the manual,this is exactly the same engine, so the difference must be the ECU (correct me if I'm wrong). How hard would it be to change ECU's, to give me 100bhp, or is there more to it than that, like different pistons and such? And how much would it roughly cost?
The 60bhp Ibiza uses a 1.2 12v lump IIRC. Both the 1.4 engines (75 and 100bhp) are 16v units. On a N/A car this difference in power would not normaly be controlled by just an ECU change. At the very least the cams will be different as the 100BHP engine makes it's power a fair bit higher in the rpm range.
Yeah thats true, but, VAG are notorious for offering the same engine with different outputs. For example, the 1.8T comes in 150bhp to 225bhp forms. Different cams wouldn't be a huge problem, as I'm planning to uprate them anyway. Any ideas on which companies I should talk to about what I want to do?
The DJ 27 said: Yeah thats true, but, VAG are notorious for offering the same engine with different outputs. For example, the 1.8T comes in 150bhp to 225bhp forms. Different cams wouldn't be a huge problem, as I'm planning to uprate them anyway. Any ideas on which companies I should talk to about what I want to do?
It's far easier with a turbocharged engine. In that case it's simply a matter of what they limit the maximum boost to in the ECU.
www.auto-amd.com/ specialise in tuning the Audi/VW engines, they may have some idea of what's involved.
Personaly the best way of getting more power would be to sell your car and buy the 100bhp version. That way you won't attract huge insurance premiums for having a modified car.
FWIW there's a pretty large number of differences between the 150 and 225 bhp VAG 1.8Ts.
The 150 and 185 engines are identical, excepet for the ECU, which increases the boost requested from the turbo.
The 210 and 225 engines have different pistons (for a lower C/R), a stronger big end and con-rods, a larger turbo (K04 rather than the K03 in the lower output motors. It's the same physical size but the compressor blades are more aggressively angled, and it can generate a fair bit more boost), bigger injectors, twin intercoolers, *and* an ECU upgrade...
Having said which, the 150 engines can be raised to 200-ish (for the newer, drive-by-wire ones at least) with a simple ECU remap. They do this by increasing the boost and fuelling (plus various other things). However, it is a lot easier to do this with a turbocharged engine, and chip upgrades for N/A engines seem to be a last resort after intake, exhaust, post and flow work, and hot cams...
The 150 and 185 engines are identical, excepet for the ECU, which increases the boost requested from the turbo.
The 210 and 225 engines have different pistons (for a lower C/R), a stronger big end and con-rods, a larger turbo (K04 rather than the K03 in the lower output motors. It's the same physical size but the compressor blades are more aggressively angled, and it can generate a fair bit more boost), bigger injectors, twin intercoolers, *and* an ECU upgrade...
Having said which, the 150 engines can be raised to 200-ish (for the newer, drive-by-wire ones at least) with a simple ECU remap. They do this by increasing the boost and fuelling (plus various other things). However, it is a lot easier to do this with a turbocharged engine, and chip upgrades for N/A engines seem to be a last resort after intake, exhaust, post and flow work, and hot cams...
Thought you may be interested in this seat enthusiast site. They are a nice bunch
www.seatenthusiasts.co.uk/forum/index.php?s=
I think it could be down to different throttle body may be the answer.
www.seatenthusiasts.co.uk/forum/index.php?s=
I think it could be down to different throttle body may be the answer.
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