the highest octane we have here is 91 and i was wondering if these mods would achieve 300+whp...ARC intake, Helix 3"dp, HKS hi-power exhaust, and walbro 255 fuel pump? thanks...suggestions are welcome, but im pretty firm on the hks hi power

 

get a flash and catless test pipe too

 

whos flash should i go with? im thinking vishnu or dynoflash (Al). i dont want a test pipe beucase i want to keep it legal

 

safc, larger injectors and a tune will net you 300+ on 91.

 

Unless you have emissions you should be fine without a cat. I have never seen a cop get on his hands and knees and look for a cat. Worst comes to worst, he's going to give you an exhaust ticket, cat or no cat.

 

I've not been here long, but I do know that's a sensitive question. Here's what I think. If you plan on flashing it and leaving it alone, either one would do I guess, but if you want to expand as you go, and change things down the road, than I'd do Vishnu, in plans in getting an XEDE down the road. That way, you can do changes on your own(or a knowledgable friend) with your laptop as you grow in mods. That cuts down on waits by sending your ECU in the mail for reflashes after just dropped another hot part on your car. If you want to just flash it and leave it, I guess it's up to price, and customer service as you think it should be, because there are large groups of people here that swear by both companies.

For full discloser, I have a XEDE piggyback sitting on my livingroom floor waiting to go in, and plan to go with Vishnu. I did the mail...reflash wait ruetine with my Z-28's PCM when Ed Wright was redoing them. Then I got LT1 edit. Now my laptop is my friend, and that's one less thing I have going back and forth in the mail.

 

you still need some mods to get 300 whp.

BC or cams

Tune

 

Stock inj are good for anything the stock turbo can dish out(550cc).Larger injectors wont net you any more hp with mild mods... just worse gas milage... upp, safc,tbe,cai,boost controller@20 would net you 300hp... ad a pump, cams,Bigger FMIC,custom flash , alky and youll be close to 400hp depending on cam combo and alky %

 

ok, Im new...


what is upp, safc, tbe, cai, fmic, and alky

 

upper intercooler pipe, super air fuel controller, turbo back exhaust, Cold air intake, Front mount intercooler.. and alcohol injection

 

technically, its the

Apexi Super Air Flow Converter

 

With The Exede You Dont Need A Boost Controller Or A Safc.. It Does It All..

 

Does the Exede detune the boost for cold weather conditions?

 

gets some cams, test pipe, boost contoller and a tune.

 

All u need for 300 hp on 91

Turbo-back, drop in filter, 720 injectors, pump, boost controller, and safc w/the right tuner.

You don't need no flash, if ur going for flash go get ecutek or my sig.