26-02-2012, 11:50 PM
So much crap in here tbh...
There's only SO much ECUs can compensate... Most of the time ECUs are running in closed loop mode - that means they're not ready any external inputs to trim fuel, it's literally Calculated Engine Load vs RPM... - that gives you your fuel and ignition timing... At PART throttle and IDLE the lambda works, on full throttle it doesn't do anything... Don't assume the Lambda fixes everything, it's only for part and idle throttle...
Wanging on turbos onto 8v 1.4s/1.6s - everyone will slate you, but 5th injector and an external controller, you CAN make good gains... It's not going to be GTi6 beating power, but it'll sure as hell be fun... Blow one up? Oh dear, another one from your local scrappy for £50, 2 headgaskets or get someone to lathe the top of the pistons down a bit... Or worst case, get some aftermarket management... 200hp should be doable given a low enough CR and good fuelling throughout and not going nuts on the timing.
1.6 16Vs are (IMO...) f*cking good engines - remember that the TU came AFTER the XU - it was designed from the XU, a TU5JP4 with some lairy cams will produce damned good power also, IMO the TU5J4/JP4 is a seriously, seriously underestimated engine, especially for 306s... Light in comparison to a 2.0 XU and with a set of cams and bodies, you'll reach 180-190hp surprisingly easily...
There's only SO much ECUs can compensate... Most of the time ECUs are running in closed loop mode - that means they're not ready any external inputs to trim fuel, it's literally Calculated Engine Load vs RPM... - that gives you your fuel and ignition timing... At PART throttle and IDLE the lambda works, on full throttle it doesn't do anything... Don't assume the Lambda fixes everything, it's only for part and idle throttle...
Wanging on turbos onto 8v 1.4s/1.6s - everyone will slate you, but 5th injector and an external controller, you CAN make good gains... It's not going to be GTi6 beating power, but it'll sure as hell be fun... Blow one up? Oh dear, another one from your local scrappy for £50, 2 headgaskets or get someone to lathe the top of the pistons down a bit... Or worst case, get some aftermarket management... 200hp should be doable given a low enough CR and good fuelling throughout and not going nuts on the timing.
1.6 16Vs are (IMO...) f*cking good engines - remember that the TU came AFTER the XU - it was designed from the XU, a TU5JP4 with some lairy cams will produce damned good power also, IMO the TU5J4/JP4 is a seriously, seriously underestimated engine, especially for 306s... Light in comparison to a 2.0 XU and with a set of cams and bodies, you'll reach 180-190hp surprisingly easily...
