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ask for opinion....about spark plug
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<blockquote data-quote="Lan Dugong" data-source="post: 1792131" data-attributes="member: 2152"><p>expensive? i dont think so. how much did u buy your vf10 plus installation costs? if u can afford to have that, means u can afford to get walbro pumps. more over, the rule of thumb of upgrading will still be upgrading the fuel pump 1st.</p><p></p><p>during high boosting, the fuelpumps lph/flow will be lower and lower due to high pressure built. it's logic isnt it? i hope u get what i mean. and in the comparison between a few pumps, walbro is good at high boost. but there are other much better high end fuel pumps in the market. so dont just take my word. a vspec r34 is good, the sard pump is good, etc etc.</p><p></p><p>yes egt will be safe provided u tune the SAFC at your desired boost. unless if you have an engine management, with good fuelling system and also engine can tahan, what ever boost u run, the afr and egt is cun. i've seen few cars running on engine managements, they boost 0.8bar also afr and egt cun, they boost 1.5bar also still cun, afr & egt readings just like 0.8bar, they boost 2bar also still cun. they dont boost also cun! why? that's because engine management allows 3-d fuel mapping, fuel alligned with boost and rev and their fuel delivery system is well built.</p></blockquote><p></p>
[QUOTE="Lan Dugong, post: 1792131, member: 2152"] expensive? i dont think so. how much did u buy your vf10 plus installation costs? if u can afford to have that, means u can afford to get walbro pumps. more over, the rule of thumb of upgrading will still be upgrading the fuel pump 1st. during high boosting, the fuelpumps lph/flow will be lower and lower due to high pressure built. it's logic isnt it? i hope u get what i mean. and in the comparison between a few pumps, walbro is good at high boost. but there are other much better high end fuel pumps in the market. so dont just take my word. a vspec r34 is good, the sard pump is good, etc etc. yes egt will be safe provided u tune the SAFC at your desired boost. unless if you have an engine management, with good fuelling system and also engine can tahan, what ever boost u run, the afr and egt is cun. i've seen few cars running on engine managements, they boost 0.8bar also afr and egt cun, they boost 1.5bar also still cun, afr & egt readings just like 0.8bar, they boost 2bar also still cun. they dont boost also cun! why? that's because engine management allows 3-d fuel mapping, fuel alligned with boost and rev and their fuel delivery system is well built. [/QUOTE]
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