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Discussion Starter #1
Has anyone run either of these? If so what are your
Oppinions.
 

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Discussion Starter #2
So no one has tried the 88mm yet
 

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t4 with 88mm compressors arent popular on these cars because of backpressure issues. i dont know of anyone who has thought about running one. best to go t6 with an 88. if your doing a t4 i would stay below 80mm. the on3 gt45 ive not heard of before. if its anything similar to the ebay "gt45" its specs are not anywhere near a real garrett gt45. the ebay gt45's are 70mm with huge compressor a/r. would be fine on a larger displacement engine running at low boost level. on smaller engines it will be less responsive than your standard 70mm with smaller compressor a/r. the biggest and best upgrade they have for the modular crowd imo is the 76mm. but unless your planning to seriously make 700hp itll just be laggy compared to the smaller units
 
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