Another stock turbo question!
10-13-08, 03:33 AM
#1
FC3S
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Another stock turbo question!
Hey guys, was just wondering if it is worth doing my injectors now for a small gain. My car is currently running the injectors at max duty cycle at 6500 rpm. Its a ported and dowelled motor with the "unbreakable" seals in it. Im currently getting 233hp at the rears. I got the normal problem of the boost spiking up to 14psi and then bleeding back to 8 at 6500rpm, which is rev limit at the moment. I have bigger fuel rails sitting here as i am slowly gathering the parts to make this thing make proper power.
Now what i wanna know is if i get new injectors/fuel pump/fuel reg is it going to be worth the effort and money on a tune for now. As looking at my dyno sheet as the boost starts to bleed off the power curve does too. (i have a sheet with the boost mapped as well) but i wanna make the thing rev harder than it does ie back to 8 grand. Was going to go with 900cc injectors for now, using them as the secondaries and moving them to the primarys when the new turbo comes (looking at a T04Z) and putting bigger secondaries in. So is this worth doing, will it allow me to make my car rev a bit more, or is the turbo just going to ruin it?
Now what i wanna know is if i get new injectors/fuel pump/fuel reg is it going to be worth the effort and money on a tune for now. As looking at my dyno sheet as the boost starts to bleed off the power curve does too. (i have a sheet with the boost mapped as well) but i wanna make the thing rev harder than it does ie back to 8 grand. Was going to go with 900cc injectors for now, using them as the secondaries and moving them to the primarys when the new turbo comes (looking at a T04Z) and putting bigger secondaries in. So is this worth doing, will it allow me to make my car rev a bit more, or is the turbo just going to ruin it?
10-13-08, 10:20 AM
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Engine, Not Motor
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If you know you are going to upgrade the turbo, it doesn't seem wise to spend the money now on the stock turbo. You'll need to retune with the larger turbo anyway.
10-14-08, 04:40 AM
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Well i was putting in the bigger secondaries for now, and when i got the new turbo was going to buy bigger injectors again making them the secondaries and putting the others as primarys. Basically just getting the fuel system ready hoping to be able to rev the car a bit harder while i save for the new turbo (knowing me could take a few months) so am i going to gain much hp outta reving it harder, or is the stock turbo just going to hold it back to much
10-14-08, 09:45 AM
#5
Ronald..
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The stock turbo sucks, at 14psi your really just causing more damage to the turbo it self than making any power. Just leave it all alone until you can get a decent turbo.
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